Cumulus Linux 4.1 Release Notes
Download all 4.1 release notes as .xls
4.1.1 Release Notes
Open issues in 4.1.1
| Issue ID | Description | Affects | Fixed |
|---|---|---|---|
| CM-32860 | The following vulnerabilities were announced in the p11-kit (libp11-kit0) packages: CVE-2020-29361: Multiple integer overflows have been discovered in the array allocations in the p11-kit library and the p11-kit list command, where overflow checks are missing before calling realloc or calloc. CVE-2020-29362: A heap-based buffer over-read has been discovered in the RPC protocol used by thep11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation. CVE-2020-29363: A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value. Vulnerable: 0.23.15-2 Fixed: 0.23.15-2_deb10u1 | 4.0.0-4.2.1 | |
| CM-32733 | CVE-2020-29479 CVE-2020-29480 CVE-2020-29481 CVE-2020-29482 CVE-2020-29483 CVE-2020-29484 CVE-2020-29485 CVE-2020-29486 CVE-2020-29566 CVE-2020-29570 CVE-2020-29571 Several security issues affecting Xenstore could result in cross domain access (denial of service, information leaks or privilege escalation) or denial of service against xenstored. Additional vulnerabilities could result in guest-to-host denial of service. Vulnerable: <= 4.11.4+57-g41a822c392-1 Fixed: 4.11.4+57-g41a822c392-2 | 4.0.0-4.2.1 | |
| CM-32661 | On the Edgecore AS7312 switch, eth0 and swp use the same MAC address. | 3.7.14, 4.0.0-4.2.1 | |
| CM-32641 | CVE-2020-27350: Missing input validation in the ar/tar implementations of APT, the high level package manager, could cause out-of-bounds reads or infinite loops, resulting in denial of service when processing malformed deb files. CVE-2020-27351: Various memory and file descriptor leaks were discovered in the Python interface to the APT package management runtime library, which could result in denial of service. Vulnerable: apt <= 1.8.2.1, python-apt <= 1.8.4.1 Fixed: apt 1.8.2.2, python-apt 1.8.4.3 | 4.0.0-4.2.1 | |
| CM-32622 | The following vulnerability has been announced in OpenSSL: CVE-2020-1971: A flaw in the GENERAL_NAME_cmp() function could cause a NULL dereference when both GENERAL_NAMEs contain an EDIPARTYNAME, resulting in denial of service. More information can be found at https://www.openssl.org/news/secadv/20201208.txt . Vulnerable: <= 1.1.1d-0+deb10u3 Fixed: 1.1.1d-0+deb10u4 | 4.0.0-4.2.1 | |
| CM-32592 | CVE-2020-27670 CVE-2020-27671 CVE-2020-27672 CVE-2020-27674 CVE-2020-28368: Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, privilege escalation or information leaks. Vulnerable: < 4.11.4+57-g41a822c392-1 Fixed: 4.11.4+57-g41a822c392-1 | 4.0.0-4.2.1 | |
| CM-32545 | If the FRR and MSTP processes go down, an SNMP TRAP is not generated even with the following configuration in the /etc/snmp/snmpd.conf file.proc watchfrr | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-32532 | CVE-2020-8927: A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a “one-shot” decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. If one cannot update to a fixed version, we recommend to use the “streaming” API as opposed to the “one-shot” API, and impose chunk size limits. Vulnerable: 1.0.7-2 Fixed: 1.0.7-2+deb10u1 | 4.0.0-4.2.1 | |
| CM-32420 | When running traditional mode bridges at scale (for example, when you have more than 200 bridges and a large number of MAC addresses), MLAG bonds flap intermittently from dual to single connected, then back to dual connected, which causes a layer 2 loop and STP state changes. To work around this issue, either shut down one side of the MLAG bond or prune out VLANS over the bond. | 3.7.13-3.7.14, 4.0.0-4.2.1 | |
| CM-32412 | CVE-2020-28196: MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit. Vulnerable: 1.17-3 Fixed: 1.17-3+deb10u1 | 4.0.0-4.2.1 | |
| CM-32311 | CVE-2020-25709, CVE-2020-25710: Two vulnerabilities in the certificate list syntax verification and in the handling of CSN normalization were discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. An unauthenticated remote attacker can take advantage of these flaws to cause a denial of service (slapd daemon crash) via specially crafted packets. Vulnerable: <= 2.4.47+dfsg-3+deb10u3 Fixed: 2.4.47+dfsg-3+deb10u4 | 4.0.0-4.2.1 | |
| CM-32226 | If switchd successfully signals clagd that it is going down, clagd stops responding to keepalive echo requests from the peer instead of sending a good bye to the peer over both the peerlink and the backup switch. Eventually, the keepalive timer expires and the secondary switch becomes the primary, and brings the bonds and VNIs back up. However, if switchd does not successfully signal it is going down, (in the event of a crash), the primary switch continues to respond to keepalives, and the bonds and VNIs are down on both peers. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-32215 | On the Dell S5048F-ON switch, optical transceivers do not come up and the modules are in reset mode. | 4.0.0-4.2.1 | |
| CM-32169 | OpenSSH is vulnerable to CVE-2020-14145, as described in https://www.fzi.de/fileadmin/user_upload/2020-06-26-FSA-2020-2.pdf. This is an information leak in algorithm negotiation that can allow man-in-the-middle attacks on initial connection attempts without a previously stored server host key on the client. If desired, mitigation using UpdateHostKeys and HostKeyAlgorithms is also given in that paper. | 3.0.0-3.7.14, 4.0.0-4.2.1 | |
| CM-32112 | On the ARM platform, NTP peer associations slowly increase to larger offsets (~500ms). | 4.0.0-4.2.1 | |
| CM-32110 | CVE-2020-25692: A vulnerability in the handling of normalization with modrdn was discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. An unauthenticated remote attacker can use this flaw to cause a denial of service (slapd daemon crash) via a specially crafted packet. The slapd package is not present in the image or repository, although the OpenLDAP libraries are present. Vulnerable: <= 2.4.47+dfsg-3+deb10u2 Fixed: 2.4.47+dfsg-3+deb10u3 | 4.0.0-4.2.1 | |
| CM-32006 | Certain Dell S4048-ON switches show an incorrect vendor name and hang when you issue the reboot command. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-31954 | A security issue was discovered in the MariaDB database server. Vulnerable: 10.3.25-0 Fixed: 10.3.25-0+deb10u1 | 4.0.0-4.2.1 | |
| CM-31936 | When you back up and restore a configuration using the conf-backup utility, the switch might hang when rebooted. | 4.1.1-4.2.1 | |
| CM-31864 | CVE-2020-14355: Multiple buffer overflow vulnerabilities were found in the QUIC image decoding process of the SPICE remote display system, before spice-0.14.2-1. Both the SPICE client (spice-gtk) and server are affected by these flaws. These flaws allow a malicious client or server to send specially crafted messages that, when processed by the QUIC image compression algorithm, result in a process crash or potential code execution. Vulnerable: 0.14.0-1.3 Fixed: 0.14.0-1.3+deb10u1 | 4.0.0-4.2.1 | |
| CM-31697 | Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks. These include the following:CVE-2020-25595, CVE-2020-25596, CVE-2020-25597, CVE-2020-25599, CVE-2020-25600, CVE-2020-25601, CVE-2020-25602, CVE-2020-25603, CVE-2020-25604. Vulnerable: < 4.11.4+37-g3263f257ca-1 Fixed: 4.11.4+37-g3263f257ca-1 | 4.0.0-4.2.1 | |
| CM-31605 | When you configure an SNMPv3 user with the net-snmp-config configuration command from the libsnmp-dev package, you get an error message similar to the one below:cumulus@switch:mgmt-vrf:~$ sudo net-snmp-config –create-snmpv3-user -a shaauthpass -x aesprivpass -A SHA -X AES userSHAwithAES To work around this issue, use the NCLU command to configure SNMPv3 user parameters; for example: cumulus@switch:mgmt-vrf:~$ net add snmp-server username user999 auth-md5 user999password encrypt-des user999encryption Alternatively, directly edit the /etc/snmp/snmpd.conf file as described in the documentation. | 3.7.13-3.7.14, 4.0.0-4.2.1 | |
| CM-31565 | Multicast traffic on a VPN is sent to remote VTEPs that are not part of the VPN and the remote VTEPs receive multicast traffic encapsulated in a VXLAN ID that doesn’t exist. To work around this issue, disable IGMP snooping on the switch. | 3.7.12-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-31545 | In an MLAG configuration with a layer 3 VNI, when you bounce the peer link, all layer 2 VNIs listed under the layer 3 VNI are duplicated. To work around this issue, restart FRR with the sudo systemctl restart frr.service command. | 3.7.10-3.7.13, 4.1.1-4.2.1 | 3.7.14-4.1.0 |
| CM-31374 | CVE-2020-15166: ZeroMQ, a lightweight messaging kernel library does not properly handle connecting peers before a handshake is completed. A remote, unauthenticated client connecting to an application using the libzmq library, running with a socket listening with CURVE encryption/authentication enabled can take advantage of this flaw to cause a denial of service affecting authenticated and encrypted clients. Vulnerable: <= 4.3.1-4+deb10u1 Fixed: 4.3.1-4+deb10u2 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31373 | The following vulnerabilities have been announced in the qemu packages, which are available for optional installation: CVE-2020-12829: An integer overflow in the sm501 display device may result in denial of service. CVE-2020-14364: An out-of-bounds write in the USB emulation code may result in guest-to-host code execution. CVE-2020-15863: A buffer overflow in the XGMAC network device may result in denial of service or the execution of arbitrary code. CVE-2020-16092: A triggerable assert in the e1000e and vmxnet3 devices may result in denial of service. Vulnerable: <= 3.1+dfsg-8+deb10u7 Fixed: 3.1+dfsg-8+deb10u8 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31327 | After you manually edit the /etc/resolv.conf file to change or remove a VRF for a given DNS server, ifreload does not remove IP rules created for DNS servers in the VRF.To work around this issue, run the net add/del dns nameserver vrf <name> command to force the DNS configuration. | 3.7.13-3.7.14, 4.1.1-4.2.1 | |
| CM-31225 | The following vulnerabilities have been announced in the BIND9 server, which is available for optional installation: CVE-2020-8619: an asterisk character in an empty non-terminal can cause an assertion failure, resulting in denial of service. CVE-2020-8622: a truncated TSIG response can lead to an assertion failure, resulting in denial of service. CVE-2020-8623: a flaw in the native PKCS#11 code can lead to a remotely triggerable assertion failure, resulting in denial of service. CVE-2020-8624: update-policy rules of type “subdomain” are enforced incorrectly, allowing updates to all parts of the zone along with the intended subdomain. Vulnerable: <= 9.11.5.P4+dfsg-5.1+deb10u1 Fixed: 9.11.5.P4+dfsg-5.1+deb10u2 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31192 | CVE-2020-11724: An issue was discovered in OpenResty before 1.15.8.4. ngx_http_lua_subrequest.c allows HTTP request smuggling, as demonstrated by the ngx.location.capture API. Vulnerable: <= 1.14.2-2+deb10u2 Fixed: 1.14.2-2+deb10u3 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31174 | The following vulnerabilities have been announced in the ghostscript libgs9 package, which is available for optional installation. These can allow an attacker to elevate privileges or cause a denial of service with crafted PS/EPS/PDF files. CVE-2020-16287 CVE-2020-16288 CVE-2020-16289 CVE-2020-16290 CVE-2020-16291 CVE-2020-16292 CVE-2020-16293 CVE-2020-16294 CVE-2020-16295 CVE-2020-16296 CVE-2020-16297 CVE-2020-16298 CVE-2020-16299 CVE-2020-16300 CVE-2020-16301 CVE-2020-16302 CVE-2020-16303 CVE-2020-16304 CVE-2020-16305 CVE-2020-16306 CVE-2020-16307 CVE-2020-16308 CVE-2020-16309 CVE-2020-16310 CVE-2020-17538 Vulnerable: <= 9.27~dfsg-2+deb10u3 Fixed: 9.27~dfsg-2+deb10u4 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31150 | On the Mellanox SN2410 switch, you see switchd core and GBIN_MALLOC errors.To work around this issue, restart switchd. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-31120 | In a traditional bridge configuration with ip-forward off, neighbors are synchronized to hardware with a switchd restart but are cleared when you flap the bridge interface. | 3.7.10-3.7.14, 4.0.0-4.2.1 | |
| CM-31073 | When you set the sysctl settings net.ipv6.conf.all.accept_ra_defrtr (to prevent acceptance of IPv6 default route advertisements) and net.ipv6.conf.default.accept_ra_defrtr (set for newly created interfaces), if you create a new virtual interface, any pre-existing interface does not start accepting IPv6 default route avertisements again.To work around this issue, when you create a new virtual interface, set net.ipv6.conf.<interface>.accept_ra_defrtr to 0 for all interfaces and run sysctl -p --system. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-31057 | The following vulnerability has been announced: CVE-2019-11360: A buffer overflow in iptables-restore in netfilter iptables 1.8.2 allows an attacker to (at least) crash the program or potentially gain code execution via a specially crafted iptables-save file. This is related to add_param_to_argv in xshared.c. | 3.0.0-4.2.0 | 4.2.1 |
| CM-31055 | The following vulnerability has been announced: CVE-2019-20892: net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. Fixed: 5.8.0-cl4.2.1u1, 5.8.0-cl3.7.14u1 | 3.0.0-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-31038 | The following vulnerability has been announced: CVE-2019-20795: iproute2 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. Vulnerable: <= 4.19.0-cl4u3 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31028 | Ingress SPAN/ERSPAN does not mirror packets when the next hop is EVPN encapsulated. | 3.7.7-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-31016 | Changing the order of the bridge ports might cause the bridge MAC address to change, which flaps the bridge and its ports. To work around this issue, manually set the MAC address of the bridge interface by adding hwaddress <mac-address> to the bridge stanza in the /etc/network/interfaces file. | 3.0.0-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30957 | The following vulnerability has been announced in the json-c / libjson_c3 packages: CVE-2020-12762: json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend. Vulnerable: 0.12.1+ds-2 Fixed: 0.12.1+ds-2+deb10u1 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30879 | NCLU restarts FRR when removing a BGP VRF IPv4 aggregate-address command. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30872 | Several vulnerabilities have been discovered in the GRUB2 bootloader. CVE-2020-10713: A flaw in the grub.cfg parsing code was found allowing to break UEFI Secure Boot and load arbitrary code. Details can be found at https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ CVE-2020-14308: It was discovered that grub_malloc does not validate the allocation size allowing for arithmetic overflow and subsequently a heap-based buffer overflow. CVE-2020-14309: An integer overflow in grub_squash_read_symlink may lead to a heap-based buffer overflow. CVE-2020-14310: An integer overflow in read_section_from_string may lead to a heap-based buffer overflow. CVE-2020-14311: An integer overflow in grub_ext2_read_link may lead to a heap-based buffer overflow. CVE-2020-15706: script: Avoid a use-after-free when redefining a function during execution. CVE-2020-15707: An integer overflow flaw was found in the initrd size handling. Vulnerable: <= 2.02+dfsg1-20, <= 2.02+dfsg1-cl4u1 Fixed: 2.02+dfsg1-20+deb10u2, 2.02+dfsg1-cl4.2.1u1 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30863 | OpenSSH scp is vulnerable to CVE-2020-15778, where clients that have authorized access to the SSH server can execute commands on the server by copying maliciously named files. The two scenarios where an exploit may be useful to an attacker: -The user is authorized to scp but not ssh (based on the command option in the authorized_keys file), so this vulnerability can allow executing a remote command on the target computer when not authorized to do so.-An attacker plants a maliciously named file in a directory tree that someone later uses scp -r to copy over to the target computer.Be aware that restricting users to scp by using the command option in the authorized_keys file is not effective in preventing those users from executing arbitrary commands on the server.If you want to use scp -r to copy directory trees, avoid copying directory trees to which attackers may have added maliciously-named files. Archiving the directory tree with tar, zip, or a similar program, then copying the archive over to be extracted on the server avoids having to use scp -r altogether. In addition, OpenSSH provides sftp, which you can use instead of scp to copy files.To disable scp completely, use /bin/chmod 0 /usr/bin/scp . | 3.0.0-3.7.14, 4.0.0-4.2.1 | |
| CM-30856 | The following vulnerability has been announced in NGINX, which is installed by default on Cumulus Linux (however, the default NGINX configuration is not vulnerable, as it does not configure error_page redirection):CVE-2019-20372: NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer. To work around this issue, do not use error_page redirection in the vulnerable configuration. https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdf describes the vulnerability and the vulnerable configuration.Fixed: 1.14.2-2+deb10u2 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30832 | The Mellanox SN2700 and SN2410 switch intermittently reports PSU fan state changes with Unable to read from device/fan1_input/pwm1 syslog messages. | 3.7.11-3.7.14, 4.1.1-4.2.1 | |
| CM-30827 | If the MAC address of an SVI changes, clagd does not update its permanent neighbor entry for the local interface, and it does not report the change to its MLAG peer. This leaves the MLAG peer in a state where its permanent neighbor for the MLAG peer’s SVI IP address continues to use the old MAC address, which causes routed traffic over this SVI to be dropped.To work around this issue, ifdown/ifup the SVI when a MAC address changes. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30826 | The following vulnerability has been announced in QEMU: CVE-2020-8608: In libslirp 4.1.0, as used in QEMU 4.2.0, tcp_subr.c misuses snprintf return values, leading to a buffer overflow in later code. Vulnerable: <= 3.1+dfsg-8+deb10u6 Fixed: 3.1+dfsg-8+deb10u7 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30580 | ifupdown2 does not account for link status or link down configuration when running dhclient. For example, ifupdown2 ignores link-down yes during ifup/ifreload and runs the DHCP module if inet dhcp is configured on the interface. ifupdown2 also runs the DHCP module even when the physical link configured for DHCP is down. | 3.7.12-4.2.0 | 4.2.1 |
| CM-30565 | Several denial of service vulnerabilities have been announced in the qemu packages:CVE-2020-10756 CVE-2020-13361 CVE-2020-13362 CVE-2020-13754 CVE-2020-13659 Vulnerable: <= 1:3.1+dfsg-8+deb10u5 Fixed: 1:3.1+dfsg-8+deb10u6 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30546 | The following vulnerabilities have been announced in the nss packages, including libnss3, which may be used by other programs:CVE-2019-17006: Check length of inputs for cryptographic primitives CVE-2019-17023: After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. CVE-2020-12399: NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. CVE-2020-12402: During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. Vulnerable: <= 3.42.1-1+deb10u2 Fixed: 3.42.1-1+deb10u3 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30525 | When a specific PIM join/prune packet is received from a PIM neighbor the pimd process might crash with a core file. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-30514 | In OVSDB high availability mode, deleting > 200 VLAN bindings might cause ovs-vtepd to crash. Limit the deletion to 200 or fewer VLAN bindings. | 3.7.12-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-30504 | When the OVSDB VTEP scale increases, the CPU utilization increases and eventually the switch (ptmd) fails to respond to the BFD, causing the BFD session to go down. As a result OVSDB cannot read the BFD socket status and outputs a warning in the ovs-vtepd debugs: PTM socket error: Bad file descriptor. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30503 | In OVSDB high availability mode, if you create, then delete a binding, the FDB entry is not replaced and you see an error. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30498 | There is a change to the default OVSDB bootstrapping process, where the script created now defaults to VLAN-aware bridge mode. If you want to use traditional bride mode, you need to force it by editing the ovs-vtep-ctl script generated by the bootstrap process. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30486 | A host migrated to an 802.1X MAB port within the same broadcast domain fails to have the correct FDB entry installed if a dynamic FDB entry for that MAC address exists from previous connectivity in the broadcast domain. To work around this issue, manually delete the dynamic FDB entry that is associated with the uplink trunk port. | 3.7.12-3.7.13, 4.1.1-4.2.0 | 3.7.14-4.1.0, 4.2.1 |
| CM-30484 | Multiple vulnerabilities have been discovered in the Xen hypervisor, which might result in denial of service, guest-to-host privilege escalation, or information leaks. The CVE IDs are CVE-2020-11739, CVE-2020-11740, CVE-2020-11741, CVE-2020-11742, CVE-2020-11743, CVE-2020-15563, CVE-2020-15564, CVE-2020-15565, CVE-2020-15566, CVE-2020-15567. Xen packages are not installed by default on Cumulus Linux, but some libxen* packages are in the repository for optional installation. Vulnerable: < 4.11.3+24-g14b62ab3e5-1~deb10u1 Fixed: 4.11.4+24-gddaaccbbab-1~deb10u1 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30479 | When you restart clagd, the edge port setting on the peer link changes. | 3.7.2-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30473 | If you modify an interface name, then reuse the previous interface name for a different VLAN, the ifreload -a command generates an error similar to the following:warning: | 4.1.0-4.2.1 | |
| CM-30472 | On the QuantaMesh T1048-LY4 switch, pluggables inserted into SFP+ ports are not detected. To workaround this issue, downgrade to Cumulus Linux 3.7 ESR. | 4.0.0-4.2.0 | 4.2.1 |
| CM-30464 | The net show dot1x interface summary command output shows a MAC address with all zeros associated with a port. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30447 | The following vulnerabilities have been announced in ruby2.5, which is not installed on the switch by default, but is available in the repository for optional installation:CVE-2020-10663: The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent. CVE-2020-10933: An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter. Vulnerable: <= 2.5.5-3+deb10u1 Fixed: 2.5.5-3+deb10u2 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-30422 | When you configure a bridge in the /etc/network/interfaces file, then try to reconfigure the bridge to be a VRF interface with the same name, ifreload/ifup commands fail with an invalid table id or unable to get vrf table id error. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30361 | On Mellanox switches with the Spectrum-2 switch, the lpm-balanced forwarding profile does not work. | 4.1.1-4.2.1 | |
| CM-30340 | When you try to retrieve the Q-BRIDGE-MIB::dot1qTpFdbTable (1.3.6.1.2.1.17.7.1.2.2), snmpd does not return any results. | 4.1.1 | 4.2.0-4.2.1 |
| CM-30312 | When TACACS+ is configured and the management VRF is enabled, users with privilege level 13 are prevented from running ip and cat commands. | 4.0.0-4.2.1 | |
| CM-30296 | The net show configuration command provides the wrong net add command for ACL under the VLAN interface. | 3.7.12-3.7.14, 4.1.0-4.2.1 | |
| CM-30287 | Non SFF-8634/SFF-8636 compliant 40G AOC modules might not link up when inserted into the Mellanox SN3700 switch. The EEPROM bytes for RX amplitude control (page 03h, bytes #236-239) are defined as volatile in the SFF specification (SFF-8634/8636); after the module power is off, the EEPROM values should return to their defaults. However, these bytes are observed to be non-volatile in the modules listed below.
https://www.mouser.com/ProductDetail/Finisar/FCBN410QB1C03?qs=D%252B6gCNt%2Fg2BZq7qPdKrYVA%3D%3D Because the modules listed above do not return to their default values correctly when they are unplugged and re-inserted, a cable might become unusable until it is reprogramed. | 4.1.1-4.2.0 | 4.2.1 |
| CM-30280 | On a Mellanox SN2010 switch, the Locator LED is on after you upgrade Cumulus Linux. | 4.1.0-4.2.1 | |
| CM-30247 | dot1qVlanIndex in the dot1qVlanStaticTable of the SNMP Q-BRIDGE-MIB does not use VLAN ID and does not comply with RFC 4363. | 4.1.1-4.2.1 | |
| CM-30240 | switchd memory utilization might continue to increase if there are excessive and continuous link flaps over a long period of time.To work around this issue, correct the cause of the frequent link flaps. You can restart switchd with the sudo systemctl restart switchd command to recover memory; this operation is impactful to all traffic on the switch during the restart. | 3.7.11-3.7.12, 4.0.0-4.2.0 | 3.7.13-3.7.14, 4.2.1 |
| CM-30231 | When the dynamic or static flag on a bridge fdb (MAC) entry is changed to the opposite state, the new flag is not set appropriately in hardware. This can allow a static fdb entry to be unexpectedly learned dynamically on a different interface, or can prevent a dynamic entry from being updated or learned elsewhere. This condition can occur during a manual replacement of a local MAC address or when EVPN updates a dynamic MAC address to add or remove the Sticky Mac flag. Either situation results in the MAC address keeping the original flag in hardware. To work around this issue, delete or withdraw the fdb entry, then add the static MAC address directly. For example: bridge fdb del 50:6b:4b:ee:ee:ee dev swp31 vlan 24 master If you are unable to delete an EVPN-learned remote MAC address, you can replace the dynamic MAC address with a local static one, then delete the static MAC address. For example: bridge fdb replace 50:6b:4b:ee:ee:ee dev swp31 vlan 24 master static | 4.0.0-4.2.1 | |
| CM-30230 | If a remote EVPN Sticky MAC [Static MAC address] is unexpectedly learned dynamically on a local interface, the selected entries in zebra and BGP are in an inconsistent state. zebra increments the local MAC mobility sequence number and considers the MAC address to be local, but BGP maintains the remote Sticky MAC as the best path selected. This results in zebra installing the local MAC address and BGP not updating the route for the MAC address. | 4.0.0-4.2.1 | |
| CM-30195 | On the Dell S3000 switch, after installing the Cumulus Linux 4.1.1 disk image without a license, the switch sends a link beat if a remote host port is configured. | 3.7.11-3.7.14, 4.1.1-4.2.1 | |
| CM-30194 | After you enable ROCE with the net add interface <switch-port> storage-optimized pfc command, you cannot verify the command because it is not shown in the net show config command output. | 4.1.1-4.2.1 | |
| CM-30182 | The net show time ntp servers command does not show any output with management VRF. | 4.1.1-4.2.1 | |
| CM-30178 | NCLU tab completion for net show displays the text add help text instead of system Information for the system option. | 3.7.11-4.2.0 | 4.2.1 |
| CM-30165 | When you use a phone with EAP and voice VLAN is configured (and MAB is not configured), after the phone authenticates, all tagged traffic from the phone is dropped. To work around this issue, enable MAB on the interface. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30164 | The /usr/share/zoneinfo/leap-seconds.list file expires periodically and results in log messages being generated about that expiration.To work around this issue, you must update the file from https://www.ietf.org/timezones/data/leap-seconds.list or upgrade the tzdata package to the newest version. | 4.0.0-4.2.1 | |
| CM-30159 | After you delete a bond, the deleted bond members have the deleted bond MAC address instead of their original MAC address, which might result in traffic being discarded. To work around this issue, perform a full switch restart. | 4.1.1-4.2.1 | |
| CM-30141 | In an MLAG configuration with static VXLAN, static tunnels become unreachable. | 4.1.1-4.2.0 | 3.7.14-4.1.0, 4.2.1 |
| CM-30103 | On a Broadcom switch with the Trident2+ ASIC, ACL rules for VLANs are not applied after a reboot and the counters remain at zero. To work around this issue, either do not set acl.non_atomic_update_mode = TRUE in the /etc/cumulus/switchd.conf file or run the cl-acltool -i command after the reboot to install the ACLs. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30101 | The NCLU net show bridge spanning-tree command displays the aging timer incorrectly. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30089 | Cumulus Linux supports a maximum of 300 ACLs for use with 802.1X interfaces. This limit encompasses the default ACLs, pre-auth ACLs and dynamic ACLs. Exceeding this limit can affect the performance of the switch. | 4.1.0-4.2.1 | |
| CM-30052 | Configuring the subinterface of a VXLAN uplink under another traditional bridge, which also has the VXLAN VNI enslaved, causes switchd to use high CPU due to very frequent VXLAN tunnel sync events.To work around this issue, do not enslave the subinterface of a VXLAN layer 3 uplink under a traditional bridge in a VXLAN configuration. | 4.1.1-4.2.1 | |
| CM-30038 | The following vulnerability has been announced that affects GnuTLS: CVE-2020-13777: GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application. Vulnerable: <= 3.6.7-4+deb10u3 Fixed: 3.6.7-4+deb10u4 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-30000 | When VRF route leaking is configured, iBGP sessions might reset with the peer reporting:UPDATE Message Error/Optional Attribute Error The error is triggered by an UPDATE message that contains the EXTENDED_COMMUNITIES attribute with an empty list of extended communities. To work around this issue, apply an extended community with a route map using import <vrf> route-map <name> in the importing VRF address family. Make sure that the route map contains the set extended community rt <value:vaue> command; for example, set extended community rt 11:22. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29982 | A VRRP role change over the EVPN network causes excessive BGP updates and connectivity issues to VIP for about one minute. | 4.1.1-4.2.0 | 3.7.14-4.1.0, 4.2.1 |
| CM-29978 | The received PVST BPDU for a VLAN is flooded even though the ingress port doesn’t have the VLAN tagged. | 3.7.8-3.7.14, 4.0.0-4.2.1 | |
| CM-29890 | Multiple paths to identical EVPN prefixes are either not displayed or not accepted into the l2vpn evpn table if they are received from a different AS. | 3.7.12-3.7.14, 4.1.1-4.2.1 | |
| CM-29872 | Tab completion for the net show rollback description command returns information about a snapshot instead of context help.To work around this issue, run the net show commit history command to find descriptions instead of the net show rollback description command. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29871 | The net show rollback description <string> command returns an error even if the string matches a commit description.To work around this issue, look for your string in the output of the net show commit history command (or grep for it there) instead. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29841 | The following vulnerabilities have been announced that affect Unbound: CVE-2020-12662 and CVE-2020-12663 have been discovered in Unbound, a recursive-only caching DNS server; a traffic amplification attack against third party authoritative name servers (NXNSAttack) and insufficient sanitisation of replies from upstream servers could result in denial of service via an infinite loop. Unbound is not provided for Cumulus Linux, but the libunbound8 library package is available for optional installation on Cumulus Linux. Vulnerable: <= 1.9.0-2+deb10u1 Fixed: 1.9.0-2+deb10u2 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29838 | CPU utilization may increase when clag-managed bond interfaces are operationally/LACP down but the physical carrier remains up on the bond member switchports. This condition occurs when clag bond redirection is enabled and bond members remain up while the parent bond does not negotiate LACP.This issue is resolved in Cumulus Linux 3.7.14. | 3.7.9-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-29830 | Unicast traffic from downlink hosts is flooded to multiple remote VTEPs, which might also cause high HwIfOutQDrops/TX_DRP on the uplink ports. To work around this issue, restart switchd. | 3.7.10-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-29808 | On the Mellanox switches with BFD configured, you might see high load averages. | 4.1.1 | 4.2.0-4.2.1 |
| CM-29779 | In LLDP, the snmp subagent loses all subsequent lldpRemSysName (1.0.8802.1.1.2.1.4.1.1.9) entries after an entry with a missing SysName is added.All the information from lldpctl is correct. Only the entries after the entry that is missing a SysName in lldpRemSysName disappear from the snmp subagent. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29778 | If packets with an invalid checksum are received, the cumulus-poe service might restart and you see log messages similar to the following:May 20 10:48:04.665635 leaf01 poed[8012]: ERROR : invalid checksum in response [0xC2:0x00] May 20 10:48:04.671299 leaf01 poed[8012]: poed : ERROR : invalid checksum in response [0xC2:0x00] May 20 10:48:04.708620 leaf01 systemd[1]: cumulus-poe.service: main process exited, code=exited, status=1/FAILURE The service starts automatically but there is an impact to POE devices momentarily. | 3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-29774 | The sx_sdk service may log errors and/or generate a core file when configuring breakout ports on Mellanox Spectrum platforms. The error message observed will be similar to the following:sx_sdk: EMAD_RX_THREAD: EMAD transaction FW errorThis issue is resolved in Cumulus Linux 4.2.0 and above. | 4.1.1 | 4.2.0-4.2.1 |
| CM-29760 | Several vulnerabilities were discovered in BIND, a DNS server implementation.bind9-host (containing only /usr/bin/host) and some libraries from the bind9 source package are installed on the switch by default; the BIND server referred to in these vulnerabilities is not installed by default but is available in the repository for optional installation.CVE-2019-6477: It was discovered that TCP-pipelined queries can bypass tcp-client limits resulting in denial of service. CVE-2020-8616: It was discovered that BIND does not sufficiently limit the number of fetches performed when processing referrals. An attacker can take advantage of this flaw to cause a denial of service (performance degradation) or use the recursing server in a reflection attack with a high amplification factor. CVE-2020-8617: It was discovered that a logic error in the code which checks TSIG validity can be used to trigger an assertion failure, resulting in denial of service. Vulnerable: 9.11.5.P4+dfsg-5.1 Fixed: 9.11.5.P4+dfsg-5.1+deb10u1 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29691 | The following vulnerability has been announced in the apt package: CVE-2020-3810: Shuaibing Lu discovered that missing input validation in the ar/tar implementations of APT, the high level package manager, could result in denial of service when processing specially crafted deb files. Vulnerable: <= 1.8.2 Fixed: 1.8.2.1 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29652 | The ACCTON-DIAG option under the Cumulus Linux GRUB menu does not work. When you select this option, you see the following error:error: invalid signature. | 3.7.12-3.7.14, 4.1.1-4.2.1 | |
| CM-29603 | When you move an interface from one VRF to another and modify the description in the same configuration operation, FRR crashes and restarts during a service reload. If these two changes occur in separate reloads, FRR does not crash. | 4.1.1 | 4.2.0-4.2.1 |
| CM-29594 | When you run an Ansible script to replace the /etc/network/interfaces file, then run the ifreload -a command, you see errors similar to the following:error: swp1s1.2: netlink: cannot set link swp1s1.2 up: operation failed with ‘Network is down’ (100) To work around this issue, run the ifreload -a command a second time. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29576 | The Conntrack table fills up with OFFLOAD entries for flows that do not match the NAT rules in iptables. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29568 | When NAT is configured, non-NAT traffic is incorrectly forwarded to the CPU. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29562 | If you have an SVI with multiple VRR IP addresses and try to delete one of the VRR configurations, net commit or ifreload -a returns an error. | 3.7.12-3.7.14, 4.1.1-4.2.1 | |
| CM-29556 | The following vulnerability has been announced that affects ntp: CVE-2020-11868: ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp. This affects: ntp-4.2.8p12 (possibly earlier) and ntp-4.2.8p13 The fix for https://bugs.ntp.org/3445 introduced a bug whereby a system that is running ntp-4.2.8p12 or p13 that only has one unauthenticated time source can be attacked in a way that causes the victim’s next poll to its source to be delayed, for as long as the attack is maintained. http://support.ntp.org/bin/view/Main/NtpBug3592 gives the following mitigations if it is not possible to upgrade to a version with the fix:
| 3.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29546 | In vtysh, if you configure, then remove a layer 3 VNI for a VRF, the VNI is removed from zebra even if the VNI interface still exists in the kernel. If you configure a layer 2 VNI as a layer 3 VNI by mistake, removing the layer 3 VNI binding removes it from zebra but EVPN-learned MACs and neighbors are not installed into the kernel. To work around this issue, delete, then re-add the missing VNI. For example: cumulus@switch:~$ sudo ifdown vni10100 If you flap the link with the ip link set vni10100 down; ip link set vni10100 up commands, zebra does not re-add the VNI. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29525 | The asic-monitor.service fails when you configure /etc/cumulus/datapath/monitor.conf with monitor.histogram_pg.collect.port_group_list = <span class="error">[all_packet_pg]</span> and there is traffic passing through the buffer. When the service fails, you see the following traceback in journalctl:asic-monitor[7389]: asic-monitor-module INFO: 2020-05-01 18:28:12.548734: Egress queue(s) greater than 500 bytes in monitor port group histogram_pg | 3.7.11-3.7.13, 4.1.1-4.2.0 | 3.7.14-4.1.0, 4.2.1 |
| CM-29519 | The JSON format output of the net show bgp l2vpn evpn summary command shows the incorrect neighbour state. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29513 | Configuration of interfaces fails to apply when you set FEC. You see a message similar to the following:cmd ‘/sbin/ethtool –set-fec To work around this issue, reapply the configuration with NCLU and run the net commit or ifreload -a a second time to allow the interface configuration to apply. | 4.1.1 | 4.2.0-4.2.1 |
| CM-29492 | When you create SPAN or ERSPAN rules in ebtables, the action fails to install if it is not in lowercase. Make sure that the SPAN or ERSPAN action is all lowercase; for example:[ebtables] | 3.7.12-3.7.14, 4.1.1-4.2.1 | |
| CM-29485 | The following vulnerability affects the openldap package: CVE-2020-12243: A vulnerability was discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. LDAP search filters with nested boolean expressions can result in denial of service (slapd daemon crash). Vulnerable: <= 2.4.47+dfsg-3+deb10u1 Fixed: 2.4.47+dfsg-3+deb10u2 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29468 | On the Dell S4148T optical module, the low power polarity bit is set incorrectly and the switch port does not come up. To work around this issue, edit the /etc/hw_init.d/S10qsfp_init.sh file and change the lpmode line to be 0x3f instead of 0x00:# disable lpmode, reset all QSFP+/QSFP28 ports Reboot the switch and check that the switch port comes up. Important: Before upgrading Cumulus Linux 4.x with Debian packages that includes a fix for this problem, you must change the lpmode line back to 0x00. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29460 | The following security vulnerabilities affect qemu packages, which are available for optional installation on Cumulus Linux: CVE-2019-12068: In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances ‘s->dsp’ index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well. CVE-2019-15034: hw/display/bochs-display.c in QEMU 4.0.0 does not ensure a sufficient PCI config space allocation, leading to a buffer overflow involving the PCIe extended config space. CVE-2019-20382: QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd. CVE-2020-1983: A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service. Vulnerable: <= 3.1+dfsg-8+deb10u4 Fixed: 3.1+dfsg-8+deb10u5 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29420 | When you configure the management interface class (as shown below), eth0 remains in an admin down state on subsequent reboots:allow-mgmt eth0 | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29385 | The following vulnerability affects the openssl package: CVE-2020-1967: Bernd Edlinger discovered that malformed data passed to the SSL_check_chain() function during or after a TLS 1.3 handshake could cause a NULL dereference, resulting in denial of service. Vulnerable: <= 1.1.1d-0+deb10u2 Fixed: 1.1.1d-0+deb10u3 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29367 | On switches with the Trident3 ASIC, PFC is not working as expected. If you set the PFC for only one CoS, pause frames are sent for all CoS traffic. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-29319 | When you configure an RD or RT with NCLU, you see duplicate VNI stanzas in the /etc/frr/frr.conf file.To work around this issue, manually edit the etc/frr/frr.conf file to define advertise-all-vni before the RD or RT configuration within the l2vpn EVPN address family, then reload the FRR service with the sudo systemctl reload frr command. | 4.1.0-4.2.1 | |
| CM-29312 | FRR incorrectly orders advertise-all-vni to be later in the configuration than manual rd or route-target definitions. This causes the rd or route-target configuration to be misapplied or not applied at all.To work around this issue, when you manually configure the rd or route-target for a VNI, you must manually edit the /etc/frr/frr.conf file to define advertise-all-vni before the rd or route-target configuration within the l2vpn evpn address family. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29309 | When Optimized Multicast Flooding (OMF) is enabled with the bridge.optimized_mcast_flood = TRUE setting in the /etc/cumulus/switchd.conf file, the switch continues to flood IPv6 multicast traffic to all slave ports when there is no MLD join receive. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-29296 | The following vulnerabilities have been announced in git, which is available in the repository for optional installation: CVE-2020-5260: Felix Wilhelm of Google Project Zero discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline, the credential helper machinery can be fooled to return credential information for a wrong host. CVE-2020-11008: Carlo Arenas discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline or empty host, or lacks a scheme, the credential helper machinery can be fooled into providing credential information that is not appropriate for the protocol in use and host being contacted. Vulnerable: <= 2.20.1-2+deb10u1 (CVE-2020-5260) <= 2.20.1-2+deb10u2 (CVE-2020-11008) Fixed: 2.20.1-2+deb10u3 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29284 | The following vulnerabilities affect git, which is available in the repository for optional installation: CVE-2020-5260: Felix Wilhelm of Google Project Zero discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline, the credential helper machinery can be fooled to return credential information for a wrong host. CVE-2020-11008: Carlo Arenas discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline or empty host, or lacks a scheme, the credential helper machinery can be fooled into providing credential information that is not appropriate for the protocol in use and host being contacted. | 3.0.0-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-29270 | On Mellanox switches with the Spectrum-2 ASIC, when you use more than 16 bonds on the switch, you might experience forwarding issues or see an error similar to the following in switchd.log:2020-04-07T15:59:27.345421+10:00 le-266-q14-2-res switchd[8422]: hal_mlx_bond.c:1696 ERR member_fwd_update_cb spartan-bm87 collector set failed for swp3s0: Driver’s Return Status is Non-Zero To work around this issue, configure fewer than 16 bonds on a switch. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29259 | You might see the following gport error messages in switchd.log:
These messages are harmless and can be ignored. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29183 | On the Mellanox SN2010 and SN2100 switch, the fan speed might ramp up and down. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29178 | On Mellanox switches, the thermal monitoring script starts in suspended mode and, as a result, the fans run at sixty percent. You also see the following log message:hw-management.sh[847]: Thermal algorithm is manually suspend. To work around this issue, run the following command to enable thermal monitoring: cumulus@switch:~$ sudo echo 0 > /var/run/hw-management/config/suspend | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29165 | With FRR or OSPF, you might see an inconsistent link-state advertisement. For example, when you configure the OSPF default originate route as metric-type 1 with a specific metric, Cumulus Linux shows the default originate route as an external metric-type 2 route with the default metric in the database. This issue typically occurs when both IPv4 and IPv6 default routes exist in the routing table. | 3.7.12-4.1.1 | 4.2.0-4.2.1 |
| CM-29148 | On MLX switches that contain an OSPF IP unnumbered neighborship with a high scale of prefixes being learned, a link flap might cause the neighbor entry to not be programmed in hardware. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-29146 | On the EdgeCore Minipack AS8000, storm control does not restrict unknown unicast, broadcast, or multicast traffic. | 4.1.1-4.2.1 | |
| CM-29145 | If you try to remove BFD configuration with a reload, the FRR service fails. The reload action results in a TypeError: expected string or bytes-like object error.You see this issue only if there is default configuration, such as configuration in the /etc/frr/frr.conf file that is suppressed from view in the FRR running configuration.To work around this issue, remove the default configuration lines; for example: username cumulus nopassword | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29131 | NTP does not start when you use the default VRF instead of the management VRF. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29068 | On the Broadcom switch with the Trident3 ASIC, packet priority remark values assigned from each internal CoS value continue to work with default values; if you change the internal CoS value, the change does not take effect. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-29044 | A large number of flapping peers causes FRR to require a corresponding update to internal data structures that track peer information. Updating this internal data structure does not delete links that are down due to the flapping. The size of this array then grows to contain both current peers as well as peers that should have been deleted during the flap processing. The contents of this array is processed by FRR to poll the links, which consumes CPU for all items in the array. This additional polling consumes more CPU than necessary but has no functional impact. To work around this issue, restart FRR. | 3.7.11-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-29043 | When a multipath route that contains an EVPN path exists together with an IPv4 BGP path in the VRF, the RMAC to VTEP binding is incorrect. This invalid entry occurs because Cumulus Linux treats IPv4 routes received over the eBGP IPv4 peering incorrectly in the VRF. To work around this issue, remove the unnecessary eBGP IPv4 peering. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29035 | When you upgrade Cumulus Linux on the EdgeCore AS7726-32X or AS7326-56X switch, you might see firmware errors similar to the following:W: Possible missing firmware /lib/firmware/tigon/tg3_tso5.bin for module tg3 You can safely ignore these error messages. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29000 | The net show config and net show time ntp server commands do not show NTP server configuration. | 4.1.0-4.2.0 | 4.2.1 |
| CM-28995 | After you flap an MLAG peerlink, a rare condition might occur where routes and neighbors for VXLAN-enabled VLANs are misprogrammed as non-VXLAN routes and neighbors due to VNI state transitions. This results in a forwarding failure for traffic destined to these misprogrammed routes and neighbors. Note: Do not flap a VNI interface manually. The only expected time for a VNI interface to go down is when the MLAG secondary switch brings the VNIs protodown during a peer link failure where the backup IP address is still active. To recover from this condition, restart switchd with the sudo systemctl restart switchd command. | 3.7.10-3.7.12, 4.1.0-4.1.1 | 3.7.13-4.0.0, 4.2.0-4.2.1 |
| CM-28982 | On the EdgeCore Minipack-AS8000, when you try to configure ROCEv2, you see errors indicating that PFC is not working properly. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28948 | Cumulus Linux supports a maximum of 300 ACLs for use with 802.1X interfaces. This limit encompasses the default ACLs, pre-auth ACLs and dynamic ACLs. Exceeding this limit can affect the performance of the switch. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28944 | A change in a route map prefix list that should remove a route might not be reflected in the ospf6 database or in peers, and the route might not be deleted.To work around this issue, reenter the redistribute <connected\|static> route-map <route-map-name> statement in the configuration. | 3.6.2-4.1.1 | 4.2.0-4.2.1 |
| CM-28940 | If you configure aggregate-address <address> summary-only before a component of the same aggregate is injected into the BGP table with the network or redistribute command, when you remove the aggregate-address configuration, the component stays suppressed; it is not advertised to peers. For example:Existing configuration: router bgp 1 If you add network 50.0.0.1/32, you see the following (expected) BGP table entries:Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, Removing aggregate-address 50.0.0.0/8 summary-only at this point results in the following (unexpected) BGP table entry:Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, To work around this issue, remove, then re-add the component prefix routes. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-28925 | The global MTU setting in the mtu.json file does not take effect on SVI interfaces after ifreload -a.To work around this issue, run sudo systemctl restart networking or restart the switch.Note: A network restart is a disruptive operation. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28900 | You might see a core file in FRRouting related to OSPFv3 if the switch is configured as both an OSPFv3 ABR and ASBR, and other switches in the same area are also configured as both ABR and ASBR. This issue is not seen with a single ABR or ASBR in an area or if there are multiple ASBRs in an area not acting as ABRs. To work around this issue, do not perform redistribution on more than one ABR in the same area. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28891 | net show configuration commands does not show the RoCE net add interface <swp> storage-optimized pfc configuration. | 4.1.0-4.2.1 | |
| CM-28867 | The QuantaMesh BMS T3048-LY8 switch shows a low fan RPM in syslog. | 3.7.5-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28862 | On the Edgecore AS5812 switch, the Innodisk DIMM causes a DIMM temperature sensor absent alert. | 3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28821 | When configuring VRF route leaking, if you define import vrf route-map <name> but do not have any imported VRFs, the route map command displays incorrectly, and as a result, FRR fails to reload. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28816 | The following security advisory has been announced for bash: CVE-2019-18276 Qualys scan QID 372268 setuid vulnerability When bash or bash scripts are run setuid, bash is supposed to drop privileges, but does so incorrectly, so that an attacker with command access to the shell can use enable -f for runtime loading of a new builtin that calls setuid() to regain dropped privileges.To work around this issue, do not make bash or bash scripts setuid. | 3.0.0-3.7.14, 4.0.0-4.2.1 | |
| CM-28810 | When the garbage collector does not release memory back to the operating system, clagd might consume a large amount of memory. As a result of low system memory, systemd might shut down services to reclaim memory. | 3.7.11-3.7.12, 4.1.0-4.1.1 | 3.7.13-4.0.0, 4.2.0-4.2.1 |
| CM-28770 | The net add routing route-map <name> permit <seq> set community <comm> command does not add the set statement into the /etc/frr/frr.conf file. | 4.0.0-4.2.1 | |
| CM-28754 | On switches with the Trident2+ ASIC, adding SPAN rules disables PBR rules. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-28682 | On the Mellanox Spectrum switch in an EVPN symmetric configuration with MLAG, simultaneously shutting down the layer 3 interfaces that serve as uplinks to the VXLAN fabric might result in traffic loss of up to 15 seconds. | 4.1.0-4.1.1 | 3.7.14-4.0.0, 4.2.0-4.2.1 |
| CM-28656 | In OVSDB VLAN-aware mode, removing a VTEP binding on the NSX controller fails to clean up all interfaces associated with the logical switch. | 3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28613 | In EVPN Active-Active (MLAG) environments, rebooting one member of an MLAG pair should result in the local MAC mobility sequence number reverting to 0. Sometimes a reboot of one MLAG peer results in the local MAC mobility sequence number being set to a non-zero value despite that no more mobility events occur. This issue is cosmetic only, as BGP does not advertise the incorrect sequence number and forwarding entries correctly point to the remote VTEP where the MAC is now located. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-28611 | In an EVPN Active-Active (MLAG) environment, sometimes a local-to-remote MAC mobility event results in the local sequence number appearing higher than the remote sequence number in zebra. This issue is cosmetic only, as BGP does not advertise the incorrect sequence number and forwarding entries correctly point to the remote VTEP where the MAC is now located. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-28596 | On the Dell Z9100 switch, 100G-SR4 modules might not link up reliably in certain ports. swp1, 2, 3, 9, 10, 23, 24, 30, 31, and 32 might be affected To work around this issue, move 100G SR4 modules to one of the ports not affected by this issue. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28497 | QinQ across VXLAN on a traditional bridge does not work. | 4.1.0-4.2.1 | |
| CM-28489 | The following CVEs were announced for rsyslog: CVE-2019-17041 CVE-2019-17042rsyslogd, when receiving remote log messages (not enabled by default on Cumulus Linux) with the pmaisforwardedfrom or pmcisconames optional log parsers (also not enabled by default on Cumulus Linux), is vulnerable to CVE-2019-17041 and CVE-2019-17042 where malicious messages that appear to be from AIX or Cisco respectively may be caused to skip sanity checks, resulting in incorrect negative lengths causing heap overflows. Vulnerable: 8.1901.0-1Recommendation:Do not enable receiving syslog messages from other hosts by the network (with $UDPServerRun or $InputTCPServerRun). Also, do not enable (with $ModLoad) the vulnerable parsers pmaixforwardedfrom or pmcisconames. The default /etc/rsyslog.conf file on Cumulus Linux does not enable any of these. | 4.0.0-4.2.1 | |
| CM-28465 | When you try to configure link-down on a parent interface of a subinterface configured in a VRF, you encounter an error. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28458 | NCLU incorrectly allows you to configure port security on bond/MLAG interfaces. Port security is not supported on bond/MLAG interfaces. | 4.0.0-4.2.1 | |
| CM-28442 | PTM mis-detects incorrect hostnames of LLDP neighbors and does not fail them as expected. Instead they end up in an N/A cabling status. | 3.7.11-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-28441 | If a LLDP neighbor advertises a PortDescr that contains commas, ptmctl -d splits the string on the commas and misplaces its components in other columns. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28393 | On the Dell S5232F-ON switch, EVPN and dynamic VRF route leaking results in the CPU forwarding traffic to newly-learned type-2 routes. To work around this issue, restart FRR. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-28376 | On the Dell S5232F-ON switch, the output of ledmgrd shows amber_blinking but smonctl shows all OK. | 3.7.11-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28340 | Mellanox switches with the Spectrum A0 ASIC that are integrated with VMware NSX experience BFD connectivity issues with service nodes. As a result, VXLAN tunnels do not work. Mellanox switches with the Spectrum A1 ASIC do not have this issue. | 3.7.11-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28249 | On the Mellanox switch, when you modify the buffer and queue configuration without restarting switchd, you might see a one second interruption in forwarding. | 4.0.0-4.2.1 | |
| CM-28226 | When you restart the hsflowd service, you see a systemd warning message similar to the following:Warning: The unit file, source configuration file or drop-ins of hsflowd@mgmt.service changed on disk. Run ‘systemctl daemon-reload’. | 4.0.0-4.2.1 | |
| CM-28189 | When host-resources and ucd-snmp-mib are polled, you see permission denied messages similar to the following:Jan 30 19:22:53 switch123 snmpd[23172]: Cannot statfs /sys/kernel/debug/tracing: Permission denied | 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-28136 | The MLAG switch pair has VLANs defined that are not used on MLAG bonds. These VLANs still synchronize MAC addresses across to the peer switch. This results in log messages that indicate a MAC address is installed and the VLAN is not defined; for example:RTM_NEWNEIGH with unconfigured vlan XXXX on port peerlink | 3.7.10-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-28080 | TACACS+ through ClearPass is not currently supported. Cumulus Linux sends authorization before authentication, but ClearPass does not accept an authorization before the user is authenticated. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-28078 | On the Broadcom switch with the Trident3 ASC, packet priority remark values assigned from each internal CoS value continue to work with default values; if you change the internal CoS value, the change does not take effect. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28061 | On switches with the Trident3 ASIC, PFC is not working as expected. If you set the PFC for only one CoS, pause frames are sent for all CoS traffic. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28003 | The FRR service does not provide a way for automation to know if the configuration applied properly. To work around this issue, execute the vtysh -f <file> command in the automation file before starting the FRR service to validate the functional configuration and return an error code. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-27999 | On the EdgeCore AS7326-56X switch, the PSU fans show constant LOW warnings. | 3.7.10-3.7.12, 4.0.0-4.2.0 | 3.7.13-3.7.14, 4.2.1 |
| CM-27982 | switchd crashes when dynamic VRF route leaking is enabled and the following is true:
| 3.7.10-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-27957 | If you have configured a higher number of ports and VLANs (ports x VLANs) or the switch is a lower-powered (CPU) platform, the switchd service might fail to send a systemd keepalive within the watchdog timeout value (2 minutes by default) and you see an error similar to the following:bq. systemd[1]: switchd.service watchdog timeout (limit 2min)! To workaround this issue, either reduce the number of configured interfaces and, or VLANs, or increase the systemd timeout for switchd.service.To increase the systemd timeout:
| 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-27950 | On the Dell S5232F, S5248F, S5296F, and S3048 switch, using the poweroff or halt commands does not fully power off the switch. | 4.0.0-4.2.1 | |
| CM-27753 | The EdgeCore Minipack-AS8000 switch supports FEC RS by default; you cannot disable this setting. However, the ethtool --show-fec command output indicates that FEC is disabled. Also, if you try to change the FEC setting, Cumulus Linux reports an error. For example:cumulus@switch:~$ net add interface swp23 link speed 100000 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27678 | The net show bridge macs command returns an empty interface column.To work around this issue, run the bridge fdb show command to show the interface. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27642 | The following CVEs were announced that affect the libssh package: CVE-2019-14889 has been announced in the libssh library, where unsanitized user-provided scp command lines could allow an attacker to execute arbitrary commands on the server. The libssh library is not installed on Cumulus Linux by default, but is available in the Cumulus Linux 4 repository for optional installation. Note that libssh is distinct from libssh2 and openssh, which are present on the switches and in the repositories. See the following for more information: https://www.libssh.org/security/advisories/CVE-2019-14889.txt https://security-tracker.debian.org/tracker/CVE-2019-14889 | 4.0.0-4.2.1 | |
| CM-27637 | On the EdgeCore Minipack-AS8000 switch, a 100G DAC link does not come up when auto-negotiation is enabled on the neighbor. This switch does not support 100G DAC auto-negotiation at this time. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27581 | On the Delta AG-6248C PoE switch, when you run the apt upgrade command, the upgrade does not work. Cumulus Linux uses uboot directly instead of grub to boot the kernel. Uboot needs a special header to boot the kernel, which is not present. Without this header, when you use the apt upgrade command to upgrade Linux packages, uboot is unable to boot up the kernel.To work around this issue, upgrade Cumulus Linux by installing the Cumulus Linux image. Run the onie-select command to go into ONIE, and then use the nos-install command in ONIE to install a new image.This workaround only works when an out-of-band network is present. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-27489 | Mellanox switches might experience higher CPU usage from the sx_sdk service or when BFD is in use.To work around this issue, disable BFD to alleviate some of the CPU load. | 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-27444 | If you use the NCLU commands to configure NTP and run the net add time ntp source <interface> command before you run the net add time ntp server <server> iburst command, the /etc/ntp.conf file is misconfigured.To work around this issue, run the net add time ntp server <server> iburst command before you run the net add time ntp source <interface> command. | 3.7.10-3.7.11, 4.0.0-4.2.1 | 3.7.12-3.7.14 |
| CM-27254 | On the Mellanox switch with the Spectrum and Spectrum-2 ASIC, IPv6 egress ACLs are not supported on subinterfaces. | 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-27243 | The length of the netlink message is not set properly for non-bridge family type messages. The same length is used for both bridge and non-bridge even though the bridge family type message has an extra attribute. This causes extra bytes to be left over in non-bridge family type netlink messages. | 3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-27143 | On the Dell S5248F-ON switch, the CPU core temperature sensors show ABSENT. | 4.0.0-4.2.1 | |
| CM-27136 | With a high number of active routes (20K or more), when you perform a networking restart, the FRR log files might become flooded with error messages associated with the restart. These logs are normal and are not directly a problem. However, the large number of messages can cause the logs to rotate away any previous history, which prevents you from tracing back events leading up to the restart. In a troubleshooting environment, this can be problematic. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27099 | On the Mellanox switch with the Spectrum-2 ASIC, Precision Time Protocol (PTP) is not currently supported. | 4.0.0-4.2.1 | |
| CM-27094 | On the Delta AG9032v1 switch, smonctl and sensors report inaccurate PSU current and power. | 3.5.0-3.7.14, 4.0.0-4.2.1 | |
| CM-27049 | On the Mellanox switch with the Spectrum 2 ASIC, interfaces using 100G or 200G Direct Attach Cables (DACs) do not come up with the interface default configuration. To work around this issue and bring the interfaces up, perform the following configuration on both sides of the link:
| 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27018 | If you configure more than one VRR interface on an SVI interface, deleting one of the VRR addresses does not remove the interface/address. | 3.7.10-3.7.14, 4.0.0-4.2.1 | |
| CM-26942 | Port security is not currently supported on VX. The NCLU commands produce errors. | 4.0.0-4.2.1 | |
| CM-26921 | If you delete an undefined bond, then add a bond slave, the net commit command fails. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26913 | FRR configuration commands for an SVI interface might have the \n misplaced in the output. For example:sudo sh -c “printf ‘interface 50\nvrf TEST description L3 routing interface\n’ » /etc/frr/frr.conf" should be: sudo sh -c “printf ‘interface 50 vrf TEST\ndescription L3 routing interface\n’ » /etc/frr/frr.conf" To work around this issue, configure the interface manually in the /etc/frr/frr.conf file. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26907 | NCLU incorrectly allows you to apply port security configuration on layer 2 and layer 3 ports that are not part of a bridge. | 4.0.0-4.2.1 | |
| CM-26905 | When you update the hostname of a switch with the NCLU net add hostname <hostname> command, then run net commit, the lldpd service does not restart and other devices still see the old hostname.To work around this issue, run the sudo systemctl restart lldpd.service command. | 3.7.10-3.7.14, 4.0.0-4.2.1 | |
| CM-26875 | After you delete an IPv6 numbered BGP peer group neighbor, Cumulus Linux might continue to send route advertisements. To work around this issue, restart FRR after removing the IPv6 numbered configuration. | 3.7.9-4.1.1 | 4.2.0-4.2.1 |
| CM-26860 | When you run the NCLU net show commit last or net show commit <number> command, where <number> is the last commit, no output is shown. | 4.0.0-4.2.1 | |
| CM-26841 | In the ethool -m output, the Revision Compliance field might show Unallocated when the SFF-8363 Revision Compliance value is SFF-8636 version 2.8 or later. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-26769 | Setting ProtoDown on ports populated with SFP modules providing RJ-45 1000BASE-T interfaces does not cause the carrier to be dropped. The kernel shows carrier down; however, the remote device still shows a link. | 3.7.6-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26655 | If you reconfigure an NTP server with NCLU using different trailing options after the IP address (such as iburst), an invalid configuration is added to the /etc/ntp.conf file. For example:net add time ntp server 1.2.3.4 iburst If you need to alter existing server configurations, first remove the server, commit, then re-add the server with any trailing options. | 3.7.9-4.1.1 | 4.2.0-4.2.1 |
| CM-26599 | Auto-negotiation does not work with the QSFP28 cables and a remote system operating at 10G. Attempting to enable auto-negotiation with ethtool -s swp<#> autoneg on returns Operation not supported.To work around this issue, do not use auto-negotiation and set the local port speed to 10G. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26595 | The NCLU net show lldp command displays the speed of a ganged port group as the speed of one of the individual links, rather than the sum of their speeds. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26516 | Applying a policy-based routing (PBR) rule for all traffic from a host might disrupt ARP refresh for that connected host. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-26423 | NCLU requires you to specify an interface with multiple address-virtual statements in ascending MAC address order. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-26412 | Mac learning is not disabled by default on a double tagged peer link interface resulting in the MAC address changing between the MLAG bond and the peer link. To work around this issue, disable MAC learning on QinQ VLANs by adding bridge-learning off to the VLAN stanza in the etc/network/interfaces file. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26308 | An interface alias configured outside FRR using iproute2 is imported into the FRR running configuration and overrides the internal description. After an FRR reload, this causes FRR to delete the interface alias in an inefficient way. Depending on how many interfaces with aliases you have configured, this can cause a FRR reload to time out.To work around this issue, remove the interface alias description from iproute2. | 3.7.8-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26288 | On the Mellanox switch, static VXLAN tunnels incorrectly allow traffic from any remote tunnel IP address. | 3.7.8-3.7.14, 4.0.0-4.2.1 | |
| CM-26256 | The net show evpn vni detail json command includes an extra empty dictionary at the end of the output. | 3.7.8-3.7.14, 4.0.0-4.2.1 | |
| CM-26241 | On the Dell S5248F-ON switch, smond might generate syslog messages indicating that the fan input RPM is lower than the normal low speed of 2500 RPM. Speeds as low as 1700 RPM are acceptable in normal thermal environments; therefore, you can ignore these messages. | 3.7.6-3.7.11, 4.0.0-4.2.1 | 3.7.12-3.7.14 |
| CM-26217 | NCLU does not allow you to configure OSPF NSSAs. For example:cumulus@switch:~$ net add ospf area 0.0.0.1 nssa To work around this issue, use FRR instead. For example: switch# configure terminal | 3.7.7-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26179 | If a hostname contains utf-8 characters, the NCLU net show lldp command outputs the following error:ERROR: ‘ascii’ codec can’t encode character u’\xe9’ in position 3: ordinal not in range(128) | 3.7.7-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26147 | On the EdgeCore AS4610 switch, the ping command fails unless you run the command with sudo.To work around this issue, run the following commands: cumulus@switch:~$ sudo setcap cap_net_raw+ep /usr/share/mgmt-vrf/bin/ping Run the following command to verify the workaround:
You should see the following output:
| 3.7.6-3.7.10, 4.1.0-4.1.1 | 3.7.11-4.0.0, 4.2.0-4.2.1 |
| CM-26138 | You cannot specify a source and destination MAC address in an ERSPAN ebtables rule. For example, the following rule does not work:-A FORWARD -i swp5 -s 00:25:90:b2:bd:9d -d 50:6b:4b:96:c4:04 -j erspan –src-ip 100.1.1.2 –dst-ip 100.1.1.1 –ttl 64 | 3.7.6-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-26137 | ERSPAN in ebtables does not work for VNIs. For example, the following rule does not work:-A FORWARD -i vni10 -j erspan –src-ip 100.1.1.2 –dst-ip 100.1.1.1 –ttl 64 | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-26136 | In an ebtables rule, ERSPAN (upper case) does not work. You need to specify erspan (lower case). | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25986 | On the Mellanox Spectrum-2 switch, the time required to establish a link (from the time a link is set to admin up until the link becomes operationally up) can take up to 15 seconds on 40G interfaces and up to 30 seconds on 100G interfaces.To work around this issue, wait up to 15 seconds on 40G interfaces and 30 seconds on 100G interfaces for the link to establish. | 4.0.0-4.2.1 | |
| CM-25923 | The default route injected through OSPF when you configure default-information originate always is unreliable and might age out unexpectedly.To work around this issue, rely on a different source of default route other than injection with default-information originate. | 3.7.8-4.1.1 | 4.2.0-4.2.1 |
| CM-25890 | In some cases, the switchd service might warn of excessive MAC moves from one switch port to itself (for example, from swp18 to swp18). | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-25859 | The MTU of an SVI cannot be higher than the MTU on the bridge. Changing the MTU on the SVI with NCLU does not update the bridge MTU. The net commit command succeeds even though the MTU is not changed as expected.To work around this issue, change the MTU on all SVIs and the bridge manually in the /etc/network/interfaces file, then apply the change with the ifreload -a command. | 3.7.7-3.7.14, 4.0.0-4.2.1 | |
| CM-25815 | When an SVI with a virtual MAC is configured with a layer 2 VNI in an EVPN environment, if you replace the /etc/network/interfaces file with a different file that does not have the SVI and layer 2 VNI configuration, the original virtual MAC is not populated through the EVPN route until FRR is restarted. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25766 | On the Dell-N3048EP-ON switch, when you run the sudo -E apt upgrade command, the upgrade does not work. | 3.7.7-4.1.1 | 4.2.0-4.2.1 |
| CM-25740 | On the Broadcom Maverick switch with a QinQ configuration, the packets coming into the CPU might be tagged incorrectly; for example, 802.1ad + 802.1q tags are expected in the packets but the packets have 802.1q + 802.1q tags. To work around this issue, configure the bridge with bridge-vlan-protocol 802.1ad:cumulus@switch:~$ net add bridge mybridge vlan-protocol 802.1ad | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25694 | If a packet is policed by ebtables, it does not increment an ACL drop on the ingress interface. Instead, it increments the TDBGC3/6 drop counter to the CPU. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25674 | On Mellanox switches, policer iptables are not working as expected. For example, when using a policer with mode KB/MB/GB to rate-limit interfaces, the syntax is accepted but the data plane transfer speed is not affected by the rule. | 3.7.6-3.7.8, 4.0.0-4.2.1 | 3.7.9-3.7.14 |
| CM-25400 | If an SVI exists in the configuration before you assign it an IP address, when you do assign the IP address with the NCLU command, the vlan-id and the raw-device bridge stanzas are not added automatically. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25397 | When first creating a bond and enslaving an interface, NCLU hides some of the bridge command suggestions, although they are still accepted. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-24894 | The maximum-prefix configuration under the IPv4 address family has an optional restart value, which you can configure. This configuration is ignored and, instead of restarting the sessions every x minutes, the peer constantly changes between established and idle due to the prefix count being exceeded. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-24799 | On switches with the Trident2 ASIC, 802.1Q-encapsulated control plane traffic received on an interface with 802.1AD configured subinterfaces might be dropped. This issue only affects QinQ configurations. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-24751 | On the QuantaMesh T4048-IX8 or EdgeCore AS7326-56X switch, when using a 1000BASE-T SFP module, the module LEDs do not light to reflect link status. | 3.7.3-4.1.1 | 4.2.0-4.2.1 |
| CM-24652 | In an EVPN environment, the centralized MAC address is not installed on the MLAG pair because Cumulus Linux does not perform an SVI MAC check per VLAN. This issue does not affect a pure distributed routing (symmetric or asymmetric) environment or a pure centralized routing environment. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-24618 | If the interface alias contains a single or double quotation mark, or an apostrophe, the net show configuration commands fail with the following error:ERROR: No closing quotation See /var/log/netd.log for more details. | 3.6.1-3.7.14, 4.0.0-4.2.1 | |
| CM-24473 | SNMP incorrectly requires engine ID specification. | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24435 | When you use NCLU to configure a route map, the parser allows for glob matching of interfaces for a match interface condition when there can only be a single interface matched. The proper syntax is to use multiple route map clauses, each matching a single interface, instead of a single clause matching multiple interfaces. For example, this command is incorrect: net add routing route-map Proxy-ARP permit 25 match interface swp9-10 These commands are correct: net add routing route-map Proxy-ARP permit 25 match interface swp9 net add routing route-map Proxy-ARP permit 30 match interface swp10 | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-24426 | NCLU allows for the configuration of addresses on VRF interfaces, but tab completion for the net add vrf <name> command just displays
Tab completion for the net add vrf <name> ip address <address> command works correctly. | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24379 | On the Maverick switch, CPU forwarded packets might be dropped when there is no route to a leaked host route. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-24343 | The net del bridge bridge mcsnoop yes command does not return the value to the default of disabled.To work around this issue, use the net add bridge bridge mcsnoop no command to delete the mcsnoop attribute and return to the default value. | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24332 | On the Broadcom switch, when moving configuration from bridged to routed (or toggling from routed to bridged to routed), some traffic is not seen by the kernel. This can cause BGP to not establish on a transit node. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-24272 | When you try to configure the VRRP priority and advertisement-interval with NCLU on a traditional mode bridge, the net commit command fails.To work around this issue, use the vtysh command (inside FRR) to change the VRRP priority or advertisement-interval on traditional bridges. For example: cumulus@switch:~$ sudo vtysh switch# configure terminal switch(config)# interface br0.100 switch(config-if)# vrrp 1 priority 110 switch(config-if)# vrrp 1 advertisement-interval switch(config-if)# end switch# write memory switch# exit cumulus@switch:~ | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24271 | On SVIs in a VLAN-aware bridge, you cannot change the VRRP priority with NCLU. To work around this issue, run the vtysh command inside FRR to change the default priority. For example: cumulus@switch:~$ sudo vtysh switch# configure terminal switch(config)# interface vlan100 switch(config-if)# vrrp 1 priority 110 switch(config-if)# end switch# write memory switch# exit cumulus@switch:~ | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24270 | Cumulus Linux uses VRRPv3 as the default version, and enables both preempt and accept mode by default. You cannot change these default values with NCLU. To work around this issue, run the vtysh commands (inside FRR) to change the default values. For example: cumulus@switch:~$ sudo vtysh switch# configure terminal switch(config)# interface swp4 switch(config-if)# vrrp 1 version 2 switch(config-if)# no vrrp 1 preempt switch(config-if)# end switch# write memory switch# exit cumulus@switch:~ | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24262 | NCLU does not honor auto all in the /etc/network/interfaces file and removes the existing configuration if no individual auto <iface> lines exist. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-24241 | When you try to remove a BGP peer group configuration with NCLU, the command fails but no warning message is shown. For example:cumulus@switch:~$ net del bgp neighbor fabric peer-group ‘router bgp 65001’ configuration does not have ‘neighbor fabric peer-group’ | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-24222 | When an LDAP user that does not have NCLU privileges (either in the netshow or netedit group, or in the /etc/netd.conf file) runs an NCLU command, a traceback occurs instead of a permissions error. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-24035 | On the Edgecore 4610-54P switch, automatic medium-dependent interface crossover (auto-MDIX) stops working on a 100M full duplex interface and does not detect the required cable connection type. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23825 | The net add interface <interface> ptm-enable command adds no ptm-enable for that interface in the frr.conf file.Running the net add or the net del command does not remove no ptm-enable from the frr.conf file. You have to remove it manually using vtysh. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23665 | NCLU automatically adds the VLAN ID (for the layer 3 VNI/SVI) to the bridge when you run net add vxlan <layer3-vni> bridge access <vlan>. This configuration breaks network connectivity in an EVPN symmetric routing configuration using MLAG.To restore connectivity, remove the VLAN ID from the bridge. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23661 | On the Mellanox switch, when you configure a GRE tunnel, the traffic behind the local tunnel endpoint destined through the GRE tunnel is software-forwarded. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23651 | In an EVPN symmetric routing configuration, when an IP address is frozen, kernel neighbor table information and kernel VRF routing table information about the frozen IP address might be out-of-sync. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-23584 | When you configure a control plane ACL to define permit and deny rules destined to the local switch, NCLU programs the control plane ACL rules into the FORWARD chain. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23570 | On an RMP/1G-T switch, when you remove link-speed 100 with the NCLU command or by editing the etc/network/interfaces file to revert the 100M interface to the default (1G auto), the interface fails to recover and does not come back up.After you remove the link-speed, ethtool shows the advertised link modes as not reported and Speed/Duplex as unknown.To work around this issue and bring the interface back up, either restart switchd or use ethtool to configure the speed, advertised, duplex or MDI-X settings.Note: The advertised link mode gets set incorrectly if you include 1000baseT/Half. The port will come up successfully at 1G. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23418 | For QSFP modules, the sudo ifdown command does not disable the Tx laser. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23417 | If you use NCLU to create an iBGP peering across the peer link, running the net add bgp l2vpn evpn neighbor peerlink.4094 activate command creates a new eBGP neighborship when one has already been configured for iBGP. This is unexpected; the existing iBGP configuration is valid. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-23311 | In an EVPN centralized routing configuration, where the layer 2 network extends beyond VTEPs, (for example, a host with bridges), the gateway MAC address does not get refreshed in the network when ARP suppression is enabled on the gateway. To work around this issue, disable ARP suppression on the centralized gateway. | 4.0.0-4.2.1 | |
| CM-23075 | There is a limitation on the number of SVI interfaces you can specify as DHCP relay interfaces in the /etc/default/isc-dhcp-relay file. For example, 1500 SVI interfaces causes the dhcrelay service to exit without a core file and logs similar to the following are generated for the interfaces:2018-11-10T23:35:30.992370-08:00 Dev dhcrelay: Listening on LPF/vlan.101/a0:00:00:00:00:51 2018-11-10T23:35:30.993472-08:00 Dev dhcrelay: Sending on LPF/vlan.101/a0:00:00:00:00:51 Eventually the dhcrelay service stops. | 3.7.1-3.7.14, 4.0.0-4.2.1 | |
| CM-23021 | When you run the mstpctl command, you might see the bridge-port state as blocking when it is actually disabled. You might see the same incorrect bridge-port state when other programs or tools use the output of mstpctl; for example, SNMP output from the BRIDGE-MIB. | 3.7.1-3.7.14, 4.0.0-4.2.1 | |
| CM-22554 | If you try to bring down several members of a bond remotely at the same time, the link state of one of the interfaces might not transition correctly to the down state; however, all links show down in hardware. | 3.6.2-3.7.14, 4.0.0-4.2.1 | |
| CM-22386 | The BFD packet redirection logic used by OVSDB server high availability mode redirects BUM packets across the peer link. The iptables rule for redirection does differentiate between BFD and non-BFD VXLAN inner packets because the service node sends all frames with its own IP address as the tunnel source IP address. The VXLAN encapsulated BUM packets do not get forwarded to the CPU and do not go through the iptable redirection rule; only VXLAN encapsulated BFD packets get forwarded to the CPU due to the inner MAC DA lookup in hardware. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-22301 | For an unresolved address, the IPROUTER default policer rule has been modified to not match on packets exiting a TUNNEL and headed to the CPU to resolve the address via ARP. As a result, the following default rule no longer matches TUNNEL ingress packets.A $INGRESS_CHAIN –in-interface $INGRESS_INTF -m addrtype –dst-type IPROUTER -j POLICE –set-mode pkt –set-rate 400 –set-burst 100 These packets are now policed by catch all rules. To work around this issue, the VPORT value on a TRIDENT switch must be changed from binary 011 to 100. | 3.6.1-3.7.14, 4.0.0-4.2.1 | |
| CM-22287 | On the EdgeCore AS7712 (Tomahawk) switch running in atomic mode, when a layer 3 ECMP path is brought down, traffic traversing the path stops working for about four seconds. When the switch is changed to non-atomic mode, the delay is less than one second. This issue is seen across OSPF and static ECMP routes. | 3.6.2-3.7.14, 4.0.0-4.2.1 | |
| CM-22228 | On switches with the Trident 2+ ASIC, counters associated with VLANs and VRFs are not working. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-22041 | At a high CPU transmit traffic rate (for example, if there is unexpected CPU generated flooding or replication in software), when the ASIC packet driver cannot keep up with the transmit rate because there are no free DMA buffers, it can back pressure by suspending the switch port transmit queues. This can fill up the application socket buffers resulting in No buffer space available error messages on protocol sockets.When the driver recovers, it automatically resumes the transmit queues. In most cases these error messages are transient. In rare cases, the hardware queues might get stuck, which you can recover with a switchd restart. | 3.4.3-3.7.14, 4.0.0-4.2.1 | |
| CM-22020 | On the Trident3 switch, static PIM with IIF based on a layer 2 bridge does not work reliably. PIM Join via signaling is required for IPMC to work properly. To work around this issue, use dynamic signaling (joins) to manage IP multicast traffic. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-21785 | The source address of the ICMPv6 time exceeded message (traceroute hop) is sourced from the wrong VRF when the traceroute target resides on the same switch but in a different VRF. | 3.6.2-3.7.14, 4.0.0-4.2.1 | |
| CM-21769 | On the Mellanox switch, GRE tunneling does not work if the tunnel source is configured on an SVI interface. If the tunnel source is configured on a physical switch port, then tunneling works as expected. | 3.6.1-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-21678 | On a Dell switch with a Maverick ASIC, NetQ might receive false alerts like the following via PagerDuty: cumulus@switch:~$ netq show sensors temp changes | grep absent | grep -v psu P2Leaf01 temp9 networking asic die temp sensor absent 43 105 100 5 Unable to find driver path: /cumulu Add 7d:22h:1m:41s P2Leaf01 temp6 networking asic die temp sensor absent 45 105 100 5 Unable to find driver path: /cumulu Add 7d:22h:1m:41s P2Leaf01 temp6 networking asic die temp sensor absent 47 105 100 5 Unable to read temp4_highest Add 9d:23h:26m:6s P2Leaf01 temp6 networking asic die temp sensor absent 45 105 100 5 Unable to read temp4_highest Add 14d:22h:46m:45s This message might occur as a result of a timeout at the hardware level, or the switch might be reporting a failure to get a response. | 3.5.3-3.7.14, 4.0.0-4.2.1 | |
| CM-21667 | FRR does not add BGP ttl-security to either the running configuration or to the /etc/frr/frr.conf file when configured on a peer group instead of a specific neighbor.To work around this issue, add ttl-security to individual neighbors instead of the peer group. | 3.6.1-3.7.14, 4.0.0-4.2.1 | |
| CM-21278 | The net show lldp command sometimes shows the port description in the Remote Port field. The net show interface command shows the correct value in the Remote Host field.To work around this issue, use net show interface command for LLDP output when connected to Cisco equipment. | 3.5.3-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-21055 | On the Mellanox switch, the destination MAC address of ERSPAN GRE packets is set to all zeros; therefore, the first transit switch might drop packets. | 3.6.0-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-20813 | Span rules matching the out-interface as a bond do not mirror packets. | 3.6.0-3.7.14, 4.0.0-4.2.1 | |
| CM-20508 | The Cumulus-Resource-Query-MIB defines the ability to gather buffer utilization status but when these objects are polled, they return nothing. | 3.5.3-3.7.14, 4.0.0-4.2.1 | |
| CM-20033 | The VLAN interface stays up even though the physical link carrying the VLAN is admin or carrier down. | 3.5.2-3.7.14, 4.0.0-4.2.1 | |
| CM-19724 | PIM and MSDP entries are set to the internal COS value of 6 so they are grouped together with the bulk traffic priority group in the default traffic.conf file. However, PIM, IGMP, and MSDP are considered control-plane and should be set to the internal COS value of 7. | 3.5.2-3.7.14, 4.0.0-4.2.1 | |
| CM-19454 | When you use NCLU to bring a bond admin down (net add bond <bond> link down), the bond interface goes into admin down state but the switch ports enslaved to the bond remain UP. If you are using bond-lacp-bypass-allow or balance-xor mode, the host might continue to send traffic. This traffic will be dropped because although the bond slaves are UP, they are not members of the bridge.To work around this issue, use the sudo ifdown <bondname> command. | 3.5.0-3.7.14, 4.0.0-4.2.1 | |
| CM-17934 | FRR tracks interface speed based on the value it learns from the Linux kernel for that interface. If the interface speed changes, FRR does not update its interface speed cache. This can lead to issues for routing protocols that derive metrics from interface speed as the cost can become out of sync with the interface speed. To work around this issue, manually define the routing protocol metric for these interfaces or restart FRR. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-17494 | In certain cases, a peer device sends an ARP request from a source IP address that is not on the connected subnet and the switch creates a STALE neighbor entry. Eventually, the switch attempts to keep the entry fresh and sends ARP requests to the host. If the host responds, the switch has REACHABLE neighbor entries for hosts that are not on the connected subnet. To work around this issue, change the value of arp_ignore to 2. See Address Resolution Protocol in the Cumulus Linux user guide for more information. | 3.3.2-3.7.14, 4.0.0-4.2.1 | |
| CM-16571 | NCLU cannot manage rsyslog to addresses routed via a VRF. In Cumulus Linux 4.0.0 and later, management VRF is enabled by default. To work around this issue, update the /etc/network/interfaces file to disable management VRF. | 3.4.3-3.7.14, 4.0.0-4.2.1 | |
| CM-15812 | Multicast forwarding fails for IP addresses whose DMAC overlaps with reserved DIPs. | 3.2.1-3.7.14, 4.0.0-4.2.1 |
Fixed Issues in 4.1.1
| Issue ID | Description | Affects |
|---|---|---|
| CM-29151 | The following security vulnerability in the gnutls28 / libgnutls* packages has been announced for Cumulus Linux 4.x (Cumulus Linux 3.x is not vulnerable): CVE-2020-11501: GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 ‘\0’ bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol. Vulnerable: <= 3.6.7-4+deb10u2 Not vulnerable: 3.6.7-4+deb10u3 | 4.0.0-4.1.0 |
| CM-29111 | Due to a packaging error, all switches installed from the same Cumulus Linux image have the same SSH host keys. This affects switches originally installed with Cumulus Linux 4.0.0 and 4.1.0 from a disk image only (including those that were upgraded by apt to a later release).As a result, this issue allows an attacker to more easily bypass remote host verification when a user connects by SSH to what is believed to be a previously used remote host but is really the attacker’s host. For example, this issue can be exploited by a spoofing or man-in-the-middle attack.To resolve this issue, generate new SSH host keys for any switch that has Cumulus Linux 4.0.0 or 4.1.0 installed on it:
After generating new SSH host keys, SSH clients that have previously logged into that switch will see a warning that the switch’s SSH host key changed; this is expected behavior. Be sure to inform anyone who may log in to the switch that you generated new SSH host keys. These users must log in to the affected switches with their SSH clients, where they will be given instructions on how to remove the old SSH host keys from the known hosts files to avoid a spoofing or man-in-the-middle attack directed at their SSH clients.Notes
| 4.0.0-4.1.0 |
| CM-29057 | The following vulnerability was reported in the bluez package. No bluez packages are installed by default on Cumulus Linux 4.x, but libbluetooth3 is available from the repository for optional installation. CVE-2020-0556: It was reported that the BlueZ’s HID and HOGP profile implementations don’t specifically require bonding between the device and the host. Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source. | 4.0.0-4.1.0 |
| CM-29033 | When using apt-get update && apt-get upgrade to upgrade from Cumulus Linux 4.0.0 or 4.1.0 to version 4.1.1 or later, a message similar to the following may appear.Reading package lists… Done To work around this issue and proceed with the upgrade, run apt-get update --allow-releaseinfo-change. | 4.0.0-4.1.0 |
| CM-28992 | The following security vulnerability has been announced: CVE-2020-10531: An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp. | 3.0.0-3.7.12, 4.0.0-4.1.0 |
4.1.0 Release Notes
Open issues in 4.1.0
| Issue ID | Description | Affects | Fixed |
|---|---|---|---|
| CM-32860 | The following vulnerabilities were announced in the p11-kit (libp11-kit0) packages: CVE-2020-29361: Multiple integer overflows have been discovered in the array allocations in the p11-kit library and the p11-kit list command, where overflow checks are missing before calling realloc or calloc. CVE-2020-29362: A heap-based buffer over-read has been discovered in the RPC protocol used by thep11-kit server/remote commands and the client library. When the remote entity supplies a byte array through a serialized PKCS#11 function call, the receiving entity may allow the reading of up to 4 bytes of memory past the heap allocation. CVE-2020-29363: A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value. Vulnerable: 0.23.15-2 Fixed: 0.23.15-2_deb10u1 | 4.0.0-4.2.1 | |
| CM-32733 | CVE-2020-29479 CVE-2020-29480 CVE-2020-29481 CVE-2020-29482 CVE-2020-29483 CVE-2020-29484 CVE-2020-29485 CVE-2020-29486 CVE-2020-29566 CVE-2020-29570 CVE-2020-29571 Several security issues affecting Xenstore could result in cross domain access (denial of service, information leaks or privilege escalation) or denial of service against xenstored. Additional vulnerabilities could result in guest-to-host denial of service. Vulnerable: <= 4.11.4+57-g41a822c392-1 Fixed: 4.11.4+57-g41a822c392-2 | 4.0.0-4.2.1 | |
| CM-32661 | On the Edgecore AS7312 switch, eth0 and swp use the same MAC address. | 3.7.14, 4.0.0-4.2.1 | |
| CM-32641 | CVE-2020-27350: Missing input validation in the ar/tar implementations of APT, the high level package manager, could cause out-of-bounds reads or infinite loops, resulting in denial of service when processing malformed deb files. CVE-2020-27351: Various memory and file descriptor leaks were discovered in the Python interface to the APT package management runtime library, which could result in denial of service. Vulnerable: apt <= 1.8.2.1, python-apt <= 1.8.4.1 Fixed: apt 1.8.2.2, python-apt 1.8.4.3 | 4.0.0-4.2.1 | |
| CM-32622 | The following vulnerability has been announced in OpenSSL: CVE-2020-1971: A flaw in the GENERAL_NAME_cmp() function could cause a NULL dereference when both GENERAL_NAMEs contain an EDIPARTYNAME, resulting in denial of service. More information can be found at https://www.openssl.org/news/secadv/20201208.txt . Vulnerable: <= 1.1.1d-0+deb10u3 Fixed: 1.1.1d-0+deb10u4 | 4.0.0-4.2.1 | |
| CM-32592 | CVE-2020-27670 CVE-2020-27671 CVE-2020-27672 CVE-2020-27674 CVE-2020-28368: Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, privilege escalation or information leaks. Vulnerable: < 4.11.4+57-g41a822c392-1 Fixed: 4.11.4+57-g41a822c392-1 | 4.0.0-4.2.1 | |
| CM-32545 | If the FRR and MSTP processes go down, an SNMP TRAP is not generated even with the following configuration in the /etc/snmp/snmpd.conf file.proc watchfrr | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-32532 | CVE-2020-8927: A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a “one-shot” decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. If one cannot update to a fixed version, we recommend to use the “streaming” API as opposed to the “one-shot” API, and impose chunk size limits. Vulnerable: 1.0.7-2 Fixed: 1.0.7-2+deb10u1 | 4.0.0-4.2.1 | |
| CM-32420 | When running traditional mode bridges at scale (for example, when you have more than 200 bridges and a large number of MAC addresses), MLAG bonds flap intermittently from dual to single connected, then back to dual connected, which causes a layer 2 loop and STP state changes. To work around this issue, either shut down one side of the MLAG bond or prune out VLANS over the bond. | 3.7.13-3.7.14, 4.0.0-4.2.1 | |
| CM-32412 | CVE-2020-28196: MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit. Vulnerable: 1.17-3 Fixed: 1.17-3+deb10u1 | 4.0.0-4.2.1 | |
| CM-32311 | CVE-2020-25709, CVE-2020-25710: Two vulnerabilities in the certificate list syntax verification and in the handling of CSN normalization were discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. An unauthenticated remote attacker can take advantage of these flaws to cause a denial of service (slapd daemon crash) via specially crafted packets. Vulnerable: <= 2.4.47+dfsg-3+deb10u3 Fixed: 2.4.47+dfsg-3+deb10u4 | 4.0.0-4.2.1 | |
| CM-32226 | If switchd successfully signals clagd that it is going down, clagd stops responding to keepalive echo requests from the peer instead of sending a good bye to the peer over both the peerlink and the backup switch. Eventually, the keepalive timer expires and the secondary switch becomes the primary, and brings the bonds and VNIs back up. However, if switchd does not successfully signal it is going down, (in the event of a crash), the primary switch continues to respond to keepalives, and the bonds and VNIs are down on both peers. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-32215 | On the Dell S5048F-ON switch, optical transceivers do not come up and the modules are in reset mode. | 4.0.0-4.2.1 | |
| CM-32169 | OpenSSH is vulnerable to CVE-2020-14145, as described in https://www.fzi.de/fileadmin/user_upload/2020-06-26-FSA-2020-2.pdf. This is an information leak in algorithm negotiation that can allow man-in-the-middle attacks on initial connection attempts without a previously stored server host key on the client. If desired, mitigation using UpdateHostKeys and HostKeyAlgorithms is also given in that paper. | 3.0.0-3.7.14, 4.0.0-4.2.1 | |
| CM-32112 | On the ARM platform, NTP peer associations slowly increase to larger offsets (~500ms). | 4.0.0-4.2.1 | |
| CM-32110 | CVE-2020-25692: A vulnerability in the handling of normalization with modrdn was discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. An unauthenticated remote attacker can use this flaw to cause a denial of service (slapd daemon crash) via a specially crafted packet. The slapd package is not present in the image or repository, although the OpenLDAP libraries are present. Vulnerable: <= 2.4.47+dfsg-3+deb10u2 Fixed: 2.4.47+dfsg-3+deb10u3 | 4.0.0-4.2.1 | |
| CM-32006 | Certain Dell S4048-ON switches show an incorrect vendor name and hang when you issue the reboot command. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-31954 | A security issue was discovered in the MariaDB database server. Vulnerable: 10.3.25-0 Fixed: 10.3.25-0+deb10u1 | 4.0.0-4.2.1 | |
| CM-31864 | CVE-2020-14355: Multiple buffer overflow vulnerabilities were found in the QUIC image decoding process of the SPICE remote display system, before spice-0.14.2-1. Both the SPICE client (spice-gtk) and server are affected by these flaws. These flaws allow a malicious client or server to send specially crafted messages that, when processed by the QUIC image compression algorithm, result in a process crash or potential code execution. Vulnerable: 0.14.0-1.3 Fixed: 0.14.0-1.3+deb10u1 | 4.0.0-4.2.1 | |
| CM-31697 | Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks. These include the following:CVE-2020-25595, CVE-2020-25596, CVE-2020-25597, CVE-2020-25599, CVE-2020-25600, CVE-2020-25601, CVE-2020-25602, CVE-2020-25603, CVE-2020-25604. Vulnerable: < 4.11.4+37-g3263f257ca-1 Fixed: 4.11.4+37-g3263f257ca-1 | 4.0.0-4.2.1 | |
| CM-31605 | When you configure an SNMPv3 user with the net-snmp-config configuration command from the libsnmp-dev package, you get an error message similar to the one below:cumulus@switch:mgmt-vrf:~$ sudo net-snmp-config –create-snmpv3-user -a shaauthpass -x aesprivpass -A SHA -X AES userSHAwithAES To work around this issue, use the NCLU command to configure SNMPv3 user parameters; for example: cumulus@switch:mgmt-vrf:~$ net add snmp-server username user999 auth-md5 user999password encrypt-des user999encryption Alternatively, directly edit the /etc/snmp/snmpd.conf file as described in the documentation. | 3.7.13-3.7.14, 4.0.0-4.2.1 | |
| CM-31565 | Multicast traffic on a VPN is sent to remote VTEPs that are not part of the VPN and the remote VTEPs receive multicast traffic encapsulated in a VXLAN ID that doesn’t exist. To work around this issue, disable IGMP snooping on the switch. | 3.7.12-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-31374 | CVE-2020-15166: ZeroMQ, a lightweight messaging kernel library does not properly handle connecting peers before a handshake is completed. A remote, unauthenticated client connecting to an application using the libzmq library, running with a socket listening with CURVE encryption/authentication enabled can take advantage of this flaw to cause a denial of service affecting authenticated and encrypted clients. Vulnerable: <= 4.3.1-4+deb10u1 Fixed: 4.3.1-4+deb10u2 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31373 | The following vulnerabilities have been announced in the qemu packages, which are available for optional installation: CVE-2020-12829: An integer overflow in the sm501 display device may result in denial of service. CVE-2020-14364: An out-of-bounds write in the USB emulation code may result in guest-to-host code execution. CVE-2020-15863: A buffer overflow in the XGMAC network device may result in denial of service or the execution of arbitrary code. CVE-2020-16092: A triggerable assert in the e1000e and vmxnet3 devices may result in denial of service. Vulnerable: <= 3.1+dfsg-8+deb10u7 Fixed: 3.1+dfsg-8+deb10u8 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31225 | The following vulnerabilities have been announced in the BIND9 server, which is available for optional installation: CVE-2020-8619: an asterisk character in an empty non-terminal can cause an assertion failure, resulting in denial of service. CVE-2020-8622: a truncated TSIG response can lead to an assertion failure, resulting in denial of service. CVE-2020-8623: a flaw in the native PKCS#11 code can lead to a remotely triggerable assertion failure, resulting in denial of service. CVE-2020-8624: update-policy rules of type “subdomain” are enforced incorrectly, allowing updates to all parts of the zone along with the intended subdomain. Vulnerable: <= 9.11.5.P4+dfsg-5.1+deb10u1 Fixed: 9.11.5.P4+dfsg-5.1+deb10u2 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31192 | CVE-2020-11724: An issue was discovered in OpenResty before 1.15.8.4. ngx_http_lua_subrequest.c allows HTTP request smuggling, as demonstrated by the ngx.location.capture API. Vulnerable: <= 1.14.2-2+deb10u2 Fixed: 1.14.2-2+deb10u3 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31174 | The following vulnerabilities have been announced in the ghostscript libgs9 package, which is available for optional installation. These can allow an attacker to elevate privileges or cause a denial of service with crafted PS/EPS/PDF files. CVE-2020-16287 CVE-2020-16288 CVE-2020-16289 CVE-2020-16290 CVE-2020-16291 CVE-2020-16292 CVE-2020-16293 CVE-2020-16294 CVE-2020-16295 CVE-2020-16296 CVE-2020-16297 CVE-2020-16298 CVE-2020-16299 CVE-2020-16300 CVE-2020-16301 CVE-2020-16302 CVE-2020-16303 CVE-2020-16304 CVE-2020-16305 CVE-2020-16306 CVE-2020-16307 CVE-2020-16308 CVE-2020-16309 CVE-2020-16310 CVE-2020-17538 Vulnerable: <= 9.27~dfsg-2+deb10u3 Fixed: 9.27~dfsg-2+deb10u4 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31150 | On the Mellanox SN2410 switch, you see switchd core and GBIN_MALLOC errors.To work around this issue, restart switchd. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-31120 | In a traditional bridge configuration with ip-forward off, neighbors are synchronized to hardware with a switchd restart but are cleared when you flap the bridge interface. | 3.7.10-3.7.14, 4.0.0-4.2.1 | |
| CM-31073 | When you set the sysctl settings net.ipv6.conf.all.accept_ra_defrtr (to prevent acceptance of IPv6 default route advertisements) and net.ipv6.conf.default.accept_ra_defrtr (set for newly created interfaces), if you create a new virtual interface, any pre-existing interface does not start accepting IPv6 default route avertisements again.To work around this issue, when you create a new virtual interface, set net.ipv6.conf.<interface>.accept_ra_defrtr to 0 for all interfaces and run sysctl -p --system. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-31057 | The following vulnerability has been announced: CVE-2019-11360: A buffer overflow in iptables-restore in netfilter iptables 1.8.2 allows an attacker to (at least) crash the program or potentially gain code execution via a specially crafted iptables-save file. This is related to add_param_to_argv in xshared.c. | 3.0.0-4.2.0 | 4.2.1 |
| CM-31055 | The following vulnerability has been announced: CVE-2019-20892: net-snmp before 5.8.1.pre1 has a double free in usm_free_usmStateReference in snmplib/snmpusm.c via an SNMPv3 GetBulk request. Fixed: 5.8.0-cl4.2.1u1, 5.8.0-cl3.7.14u1 | 3.0.0-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-31038 | The following vulnerability has been announced: CVE-2019-20795: iproute2 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. Vulnerable: <= 4.19.0-cl4u3 | 4.0.0-4.2.0 | 4.2.1 |
| CM-31028 | Ingress SPAN/ERSPAN does not mirror packets when the next hop is EVPN encapsulated. | 3.7.7-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-31016 | Changing the order of the bridge ports might cause the bridge MAC address to change, which flaps the bridge and its ports. To work around this issue, manually set the MAC address of the bridge interface by adding hwaddress <mac-address> to the bridge stanza in the /etc/network/interfaces file. | 3.0.0-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30957 | The following vulnerability has been announced in the json-c / libjson_c3 packages: CVE-2020-12762: json-c through 0.14 has an integer overflow and out-of-bounds write via a large JSON file, as demonstrated by printbuf_memappend. Vulnerable: 0.12.1+ds-2 Fixed: 0.12.1+ds-2+deb10u1 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30879 | NCLU restarts FRR when removing a BGP VRF IPv4 aggregate-address command. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30872 | Several vulnerabilities have been discovered in the GRUB2 bootloader. CVE-2020-10713: A flaw in the grub.cfg parsing code was found allowing to break UEFI Secure Boot and load arbitrary code. Details can be found at https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ CVE-2020-14308: It was discovered that grub_malloc does not validate the allocation size allowing for arithmetic overflow and subsequently a heap-based buffer overflow. CVE-2020-14309: An integer overflow in grub_squash_read_symlink may lead to a heap-based buffer overflow. CVE-2020-14310: An integer overflow in read_section_from_string may lead to a heap-based buffer overflow. CVE-2020-14311: An integer overflow in grub_ext2_read_link may lead to a heap-based buffer overflow. CVE-2020-15706: script: Avoid a use-after-free when redefining a function during execution. CVE-2020-15707: An integer overflow flaw was found in the initrd size handling. Vulnerable: <= 2.02+dfsg1-20, <= 2.02+dfsg1-cl4u1 Fixed: 2.02+dfsg1-20+deb10u2, 2.02+dfsg1-cl4.2.1u1 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30863 | OpenSSH scp is vulnerable to CVE-2020-15778, where clients that have authorized access to the SSH server can execute commands on the server by copying maliciously named files. The two scenarios where an exploit may be useful to an attacker: -The user is authorized to scp but not ssh (based on the command option in the authorized_keys file), so this vulnerability can allow executing a remote command on the target computer when not authorized to do so.-An attacker plants a maliciously named file in a directory tree that someone later uses scp -r to copy over to the target computer.Be aware that restricting users to scp by using the command option in the authorized_keys file is not effective in preventing those users from executing arbitrary commands on the server.If you want to use scp -r to copy directory trees, avoid copying directory trees to which attackers may have added maliciously-named files. Archiving the directory tree with tar, zip, or a similar program, then copying the archive over to be extracted on the server avoids having to use scp -r altogether. In addition, OpenSSH provides sftp, which you can use instead of scp to copy files.To disable scp completely, use /bin/chmod 0 /usr/bin/scp . | 3.0.0-3.7.14, 4.0.0-4.2.1 | |
| CM-30856 | The following vulnerability has been announced in NGINX, which is installed by default on Cumulus Linux (however, the default NGINX configuration is not vulnerable, as it does not configure error_page redirection):CVE-2019-20372: NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer. To work around this issue, do not use error_page redirection in the vulnerable configuration. https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdf describes the vulnerability and the vulnerable configuration.Fixed: 1.14.2-2+deb10u2 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30827 | If the MAC address of an SVI changes, clagd does not update its permanent neighbor entry for the local interface, and it does not report the change to its MLAG peer. This leaves the MLAG peer in a state where its permanent neighbor for the MLAG peer’s SVI IP address continues to use the old MAC address, which causes routed traffic over this SVI to be dropped.To work around this issue, ifdown/ifup the SVI when a MAC address changes. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30826 | The following vulnerability has been announced in QEMU: CVE-2020-8608: In libslirp 4.1.0, as used in QEMU 4.2.0, tcp_subr.c misuses snprintf return values, leading to a buffer overflow in later code. Vulnerable: <= 3.1+dfsg-8+deb10u6 Fixed: 3.1+dfsg-8+deb10u7 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30580 | ifupdown2 does not account for link status or link down configuration when running dhclient. For example, ifupdown2 ignores link-down yes during ifup/ifreload and runs the DHCP module if inet dhcp is configured on the interface. ifupdown2 also runs the DHCP module even when the physical link configured for DHCP is down. | 3.7.12-4.2.0 | 4.2.1 |
| CM-30565 | Several denial of service vulnerabilities have been announced in the qemu packages:CVE-2020-10756 CVE-2020-13361 CVE-2020-13362 CVE-2020-13754 CVE-2020-13659 Vulnerable: <= 1:3.1+dfsg-8+deb10u5 Fixed: 1:3.1+dfsg-8+deb10u6 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30546 | The following vulnerabilities have been announced in the nss packages, including libnss3, which may be used by other programs:CVE-2019-17006: Check length of inputs for cryptographic primitives CVE-2019-17023: After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. CVE-2020-12399: NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. CVE-2020-12402: During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. Vulnerable: <= 3.42.1-1+deb10u2 Fixed: 3.42.1-1+deb10u3 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30525 | When a specific PIM join/prune packet is received from a PIM neighbor the pimd process might crash with a core file. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-30514 | In OVSDB high availability mode, deleting > 200 VLAN bindings might cause ovs-vtepd to crash. Limit the deletion to 200 or fewer VLAN bindings. | 3.7.12-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-30504 | When the OVSDB VTEP scale increases, the CPU utilization increases and eventually the switch (ptmd) fails to respond to the BFD, causing the BFD session to go down. As a result OVSDB cannot read the BFD socket status and outputs a warning in the ovs-vtepd debugs: PTM socket error: Bad file descriptor. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30503 | In OVSDB high availability mode, if you create, then delete a binding, the FDB entry is not replaced and you see an error. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30498 | There is a change to the default OVSDB bootstrapping process, where the script created now defaults to VLAN-aware bridge mode. If you want to use traditional bride mode, you need to force it by editing the ovs-vtep-ctl script generated by the bootstrap process. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30484 | Multiple vulnerabilities have been discovered in the Xen hypervisor, which might result in denial of service, guest-to-host privilege escalation, or information leaks. The CVE IDs are CVE-2020-11739, CVE-2020-11740, CVE-2020-11741, CVE-2020-11742, CVE-2020-11743, CVE-2020-15563, CVE-2020-15564, CVE-2020-15565, CVE-2020-15566, CVE-2020-15567. Xen packages are not installed by default on Cumulus Linux, but some libxen* packages are in the repository for optional installation. Vulnerable: < 4.11.3+24-g14b62ab3e5-1~deb10u1 Fixed: 4.11.4+24-gddaaccbbab-1~deb10u1 | 4.0.0-4.2.0 | 4.2.1 |
| CM-30479 | When you restart clagd, the edge port setting on the peer link changes. | 3.7.2-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30473 | If you modify an interface name, then reuse the previous interface name for a different VLAN, the ifreload -a command generates an error similar to the following:warning: | 4.1.0-4.2.1 | |
| CM-30472 | On the QuantaMesh T1048-LY4 switch, pluggables inserted into SFP+ ports are not detected. To workaround this issue, downgrade to Cumulus Linux 3.7 ESR. | 4.0.0-4.2.0 | 4.2.1 |
| CM-30464 | The net show dot1x interface summary command output shows a MAC address with all zeros associated with a port. | 3.7.12-3.7.13, 4.0.0-4.2.0 | 3.7.14, 4.2.1 |
| CM-30447 | The following vulnerabilities have been announced in ruby2.5, which is not installed on the switch by default, but is available in the repository for optional installation:CVE-2020-10663: The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent. CVE-2020-10933: An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter. Vulnerable: <= 2.5.5-3+deb10u1 Fixed: 2.5.5-3+deb10u2 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-30422 | When you configure a bridge in the /etc/network/interfaces file, then try to reconfigure the bridge to be a VRF interface with the same name, ifreload/ifup commands fail with an invalid table id or unable to get vrf table id error. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30312 | When TACACS+ is configured and the management VRF is enabled, users with privilege level 13 are prevented from running ip and cat commands. | 4.0.0-4.2.1 | |
| CM-30296 | The net show configuration command provides the wrong net add command for ACL under the VLAN interface. | 3.7.12-3.7.14, 4.1.0-4.2.1 | |
| CM-30280 | On a Mellanox SN2010 switch, the Locator LED is on after you upgrade Cumulus Linux. | 4.1.0-4.2.1 | |
| CM-30240 | switchd memory utilization might continue to increase if there are excessive and continuous link flaps over a long period of time.To work around this issue, correct the cause of the frequent link flaps. You can restart switchd with the sudo systemctl restart switchd command to recover memory; this operation is impactful to all traffic on the switch during the restart. | 3.7.11-3.7.12, 4.0.0-4.2.0 | 3.7.13-3.7.14, 4.2.1 |
| CM-30231 | When the dynamic or static flag on a bridge fdb (MAC) entry is changed to the opposite state, the new flag is not set appropriately in hardware. This can allow a static fdb entry to be unexpectedly learned dynamically on a different interface, or can prevent a dynamic entry from being updated or learned elsewhere. This condition can occur during a manual replacement of a local MAC address or when EVPN updates a dynamic MAC address to add or remove the Sticky Mac flag. Either situation results in the MAC address keeping the original flag in hardware. To work around this issue, delete or withdraw the fdb entry, then add the static MAC address directly. For example: bridge fdb del 50:6b:4b:ee:ee:ee dev swp31 vlan 24 master If you are unable to delete an EVPN-learned remote MAC address, you can replace the dynamic MAC address with a local static one, then delete the static MAC address. For example: bridge fdb replace 50:6b:4b:ee:ee:ee dev swp31 vlan 24 master static | 4.0.0-4.2.1 | |
| CM-30230 | If a remote EVPN Sticky MAC [Static MAC address] is unexpectedly learned dynamically on a local interface, the selected entries in zebra and BGP are in an inconsistent state. zebra increments the local MAC mobility sequence number and considers the MAC address to be local, but BGP maintains the remote Sticky MAC as the best path selected. This results in zebra installing the local MAC address and BGP not updating the route for the MAC address. | 4.0.0-4.2.1 | |
| CM-30178 | NCLU tab completion for net show displays the text add help text instead of system Information for the system option. | 3.7.11-4.2.0 | 4.2.1 |
| CM-30165 | When you use a phone with EAP and voice VLAN is configured (and MAB is not configured), after the phone authenticates, all tagged traffic from the phone is dropped. To work around this issue, enable MAB on the interface. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30164 | The /usr/share/zoneinfo/leap-seconds.list file expires periodically and results in log messages being generated about that expiration.To work around this issue, you must update the file from https://www.ietf.org/timezones/data/leap-seconds.list or upgrade the tzdata package to the newest version. | 4.0.0-4.2.1 | |
| CM-30103 | On a Broadcom switch with the Trident2+ ASIC, ACL rules for VLANs are not applied after a reboot and the counters remain at zero. To work around this issue, either do not set acl.non_atomic_update_mode = TRUE in the /etc/cumulus/switchd.conf file or run the cl-acltool -i command after the reboot to install the ACLs. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30101 | The NCLU net show bridge spanning-tree command displays the aging timer incorrectly. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-30089 | Cumulus Linux supports a maximum of 300 ACLs for use with 802.1X interfaces. This limit encompasses the default ACLs, pre-auth ACLs and dynamic ACLs. Exceeding this limit can affect the performance of the switch. | 4.1.0-4.2.1 | |
| CM-30038 | The following vulnerability has been announced that affects GnuTLS: CVE-2020-13777: GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application. Vulnerable: <= 3.6.7-4+deb10u3 Fixed: 3.6.7-4+deb10u4 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-30000 | When VRF route leaking is configured, iBGP sessions might reset with the peer reporting:UPDATE Message Error/Optional Attribute Error The error is triggered by an UPDATE message that contains the EXTENDED_COMMUNITIES attribute with an empty list of extended communities. To work around this issue, apply an extended community with a route map using import <vrf> route-map <name> in the importing VRF address family. Make sure that the route map contains the set extended community rt <value:vaue> command; for example, set extended community rt 11:22. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29978 | The received PVST BPDU for a VLAN is flooded even though the ingress port doesn’t have the VLAN tagged. | 3.7.8-3.7.14, 4.0.0-4.2.1 | |
| CM-29872 | Tab completion for the net show rollback description command returns information about a snapshot instead of context help.To work around this issue, run the net show commit history command to find descriptions instead of the net show rollback description command. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29871 | The net show rollback description <string> command returns an error even if the string matches a commit description.To work around this issue, look for your string in the output of the net show commit history command (or grep for it there) instead. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29841 | The following vulnerabilities have been announced that affect Unbound: CVE-2020-12662 and CVE-2020-12663 have been discovered in Unbound, a recursive-only caching DNS server; a traffic amplification attack against third party authoritative name servers (NXNSAttack) and insufficient sanitisation of replies from upstream servers could result in denial of service via an infinite loop. Unbound is not provided for Cumulus Linux, but the libunbound8 library package is available for optional installation on Cumulus Linux. Vulnerable: <= 1.9.0-2+deb10u1 Fixed: 1.9.0-2+deb10u2 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29838 | CPU utilization may increase when clag-managed bond interfaces are operationally/LACP down but the physical carrier remains up on the bond member switchports. This condition occurs when clag bond redirection is enabled and bond members remain up while the parent bond does not negotiate LACP.This issue is resolved in Cumulus Linux 3.7.14. | 3.7.9-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-29830 | Unicast traffic from downlink hosts is flooded to multiple remote VTEPs, which might also cause high HwIfOutQDrops/TX_DRP on the uplink ports. To work around this issue, restart switchd. | 3.7.10-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-29779 | In LLDP, the snmp subagent loses all subsequent lldpRemSysName (1.0.8802.1.1.2.1.4.1.1.9) entries after an entry with a missing SysName is added.All the information from lldpctl is correct. Only the entries after the entry that is missing a SysName in lldpRemSysName disappear from the snmp subagent. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29778 | If packets with an invalid checksum are received, the cumulus-poe service might restart and you see log messages similar to the following:May 20 10:48:04.665635 leaf01 poed[8012]: ERROR : invalid checksum in response [0xC2:0x00] May 20 10:48:04.671299 leaf01 poed[8012]: poed : ERROR : invalid checksum in response [0xC2:0x00] May 20 10:48:04.708620 leaf01 systemd[1]: cumulus-poe.service: main process exited, code=exited, status=1/FAILURE The service starts automatically but there is an impact to POE devices momentarily. | 3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-29760 | Several vulnerabilities were discovered in BIND, a DNS server implementation.bind9-host (containing only /usr/bin/host) and some libraries from the bind9 source package are installed on the switch by default; the BIND server referred to in these vulnerabilities is not installed by default but is available in the repository for optional installation.CVE-2019-6477: It was discovered that TCP-pipelined queries can bypass tcp-client limits resulting in denial of service. CVE-2020-8616: It was discovered that BIND does not sufficiently limit the number of fetches performed when processing referrals. An attacker can take advantage of this flaw to cause a denial of service (performance degradation) or use the recursing server in a reflection attack with a high amplification factor. CVE-2020-8617: It was discovered that a logic error in the code which checks TSIG validity can be used to trigger an assertion failure, resulting in denial of service. Vulnerable: 9.11.5.P4+dfsg-5.1 Fixed: 9.11.5.P4+dfsg-5.1+deb10u1 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29691 | The following vulnerability has been announced in the apt package: CVE-2020-3810: Shuaibing Lu discovered that missing input validation in the ar/tar implementations of APT, the high level package manager, could result in denial of service when processing specially crafted deb files. Vulnerable: <= 1.8.2 Fixed: 1.8.2.1 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29594 | When you run an Ansible script to replace the /etc/network/interfaces file, then run the ifreload -a command, you see errors similar to the following:error: swp1s1.2: netlink: cannot set link swp1s1.2 up: operation failed with ‘Network is down’ (100) To work around this issue, run the ifreload -a command a second time. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29576 | The Conntrack table fills up with OFFLOAD entries for flows that do not match the NAT rules in iptables. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29568 | When NAT is configured, non-NAT traffic is incorrectly forwarded to the CPU. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29556 | The following vulnerability has been announced that affects ntp: CVE-2020-11868: ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp. This affects: ntp-4.2.8p12 (possibly earlier) and ntp-4.2.8p13 The fix for https://bugs.ntp.org/3445 introduced a bug whereby a system that is running ntp-4.2.8p12 or p13 that only has one unauthenticated time source can be attacked in a way that causes the victim’s next poll to its source to be delayed, for as long as the attack is maintained. http://support.ntp.org/bin/view/Main/NtpBug3592 gives the following mitigations if it is not possible to upgrade to a version with the fix:
| 3.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29546 | In vtysh, if you configure, then remove a layer 3 VNI for a VRF, the VNI is removed from zebra even if the VNI interface still exists in the kernel. If you configure a layer 2 VNI as a layer 3 VNI by mistake, removing the layer 3 VNI binding removes it from zebra but EVPN-learned MACs and neighbors are not installed into the kernel. To work around this issue, delete, then re-add the missing VNI. For example: cumulus@switch:~$ sudo ifdown vni10100 If you flap the link with the ip link set vni10100 down; ip link set vni10100 up commands, zebra does not re-add the VNI. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29519 | The JSON format output of the net show bgp l2vpn evpn summary command shows the incorrect neighbour state. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29485 | The following vulnerability affects the openldap package: CVE-2020-12243: A vulnerability was discovered in OpenLDAP, a free implementation of the Lightweight Directory Access Protocol. LDAP search filters with nested boolean expressions can result in denial of service (slapd daemon crash). Vulnerable: <= 2.4.47+dfsg-3+deb10u1 Fixed: 2.4.47+dfsg-3+deb10u2 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29468 | On the Dell S4148T optical module, the low power polarity bit is set incorrectly and the switch port does not come up. To work around this issue, edit the /etc/hw_init.d/S10qsfp_init.sh file and change the lpmode line to be 0x3f instead of 0x00:# disable lpmode, reset all QSFP+/QSFP28 ports Reboot the switch and check that the switch port comes up. Important: Before upgrading Cumulus Linux 4.x with Debian packages that includes a fix for this problem, you must change the lpmode line back to 0x00. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29460 | The following security vulnerabilities affect qemu packages, which are available for optional installation on Cumulus Linux: CVE-2019-12068: In QEMU 1:4.1-1, 1:2.1+dfsg-12+deb8u6, 1:2.8+dfsg-6+deb9u8, 1:3.1+dfsg-8~deb10u1, 1:3.1+dfsg-8+deb10u2, and 1:2.1+dfsg-12+deb8u12 (fixed), when executing script in lsi_execute_script(), the LSI scsi adapter emulator advances ‘s->dsp’ index to read next opcode. This can lead to an infinite loop if the next opcode is empty. Move the existing loop exit after 10k iterations so that it covers no-op opcodes as well. CVE-2019-15034: hw/display/bochs-display.c in QEMU 4.0.0 does not ensure a sufficient PCI config space allocation, leading to a buffer overflow involving the PCIe extended config space. CVE-2019-20382: QEMU 4.1.0 has a memory leak in zrle_compress_data in ui/vnc-enc-zrle.c during a VNC disconnect operation because libz is misused, resulting in a situation where memory allocated in deflateInit2 is not freed in deflateEnd. CVE-2020-1983: A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service. Vulnerable: <= 3.1+dfsg-8+deb10u4 Fixed: 3.1+dfsg-8+deb10u5 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29420 | When you configure the management interface class (as shown below), eth0 remains in an admin down state on subsequent reboots:allow-mgmt eth0 | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29385 | The following vulnerability affects the openssl package: CVE-2020-1967: Bernd Edlinger discovered that malformed data passed to the SSL_check_chain() function during or after a TLS 1.3 handshake could cause a NULL dereference, resulting in denial of service. Vulnerable: <= 1.1.1d-0+deb10u2 Fixed: 1.1.1d-0+deb10u3 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29367 | On switches with the Trident3 ASIC, PFC is not working as expected. If you set the PFC for only one CoS, pause frames are sent for all CoS traffic. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-29319 | When you configure an RD or RT with NCLU, you see duplicate VNI stanzas in the /etc/frr/frr.conf file.To work around this issue, manually edit the etc/frr/frr.conf file to define advertise-all-vni before the RD or RT configuration within the l2vpn EVPN address family, then reload the FRR service with the sudo systemctl reload frr command. | 4.1.0-4.2.1 | |
| CM-29312 | FRR incorrectly orders advertise-all-vni to be later in the configuration than manual rd or route-target definitions. This causes the rd or route-target configuration to be misapplied or not applied at all.To work around this issue, when you manually configure the rd or route-target for a VNI, you must manually edit the /etc/frr/frr.conf file to define advertise-all-vni before the rd or route-target configuration within the l2vpn evpn address family. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29309 | When Optimized Multicast Flooding (OMF) is enabled with the bridge.optimized_mcast_flood = TRUE setting in the /etc/cumulus/switchd.conf file, the switch continues to flood IPv6 multicast traffic to all slave ports when there is no MLD join receive. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-29296 | The following vulnerabilities have been announced in git, which is available in the repository for optional installation: CVE-2020-5260: Felix Wilhelm of Google Project Zero discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline, the credential helper machinery can be fooled to return credential information for a wrong host. CVE-2020-11008: Carlo Arenas discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline or empty host, or lacks a scheme, the credential helper machinery can be fooled into providing credential information that is not appropriate for the protocol in use and host being contacted. Vulnerable: <= 2.20.1-2+deb10u1 (CVE-2020-5260) <= 2.20.1-2+deb10u2 (CVE-2020-11008) Fixed: 2.20.1-2+deb10u3 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29284 | The following vulnerabilities affect git, which is available in the repository for optional installation: CVE-2020-5260: Felix Wilhelm of Google Project Zero discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline, the credential helper machinery can be fooled to return credential information for a wrong host. CVE-2020-11008: Carlo Arenas discovered a flaw in git, a fast, scalable, distributed revision control system. With a crafted URL that contains a newline or empty host, or lacks a scheme, the credential helper machinery can be fooled into providing credential information that is not appropriate for the protocol in use and host being contacted. | 3.0.0-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-29270 | On Mellanox switches with the Spectrum-2 ASIC, when you use more than 16 bonds on the switch, you might experience forwarding issues or see an error similar to the following in switchd.log:2020-04-07T15:59:27.345421+10:00 le-266-q14-2-res switchd[8422]: hal_mlx_bond.c:1696 ERR member_fwd_update_cb spartan-bm87 collector set failed for swp3s0: Driver’s Return Status is Non-Zero To work around this issue, configure fewer than 16 bonds on a switch. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29259 | You might see the following gport error messages in switchd.log:
These messages are harmless and can be ignored. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29183 | On the Mellanox SN2010 and SN2100 switch, the fan speed might ramp up and down. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29178 | On Mellanox switches, the thermal monitoring script starts in suspended mode and, as a result, the fans run at sixty percent. You also see the following log message:hw-management.sh[847]: Thermal algorithm is manually suspend. To work around this issue, run the following command to enable thermal monitoring: cumulus@switch:~$ sudo echo 0 > /var/run/hw-management/config/suspend | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29165 | With FRR or OSPF, you might see an inconsistent link-state advertisement. For example, when you configure the OSPF default originate route as metric-type 1 with a specific metric, Cumulus Linux shows the default originate route as an external metric-type 2 route with the default metric in the database. This issue typically occurs when both IPv4 and IPv6 default routes exist in the routing table. | 3.7.12-4.1.1 | 4.2.0-4.2.1 |
| CM-29151 | The following security vulnerability in the gnutls28 / libgnutls* packages has been announced for Cumulus Linux 4.x (Cumulus Linux 3.x is not vulnerable): CVE-2020-11501: GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 ‘\0’ bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol. Vulnerable: <= 3.6.7-4+deb10u2 Not vulnerable: 3.6.7-4+deb10u3 | 4.0.0-4.1.0 | 4.1.1-4.2.1 |
| CM-29148 | On MLX switches that contain an OSPF IP unnumbered neighborship with a high scale of prefixes being learned, a link flap might cause the neighbor entry to not be programmed in hardware. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-29145 | If you try to remove BFD configuration with a reload, the FRR service fails. The reload action results in a TypeError: expected string or bytes-like object error.You see this issue only if there is default configuration, such as configuration in the /etc/frr/frr.conf file that is suppressed from view in the FRR running configuration.To work around this issue, remove the default configuration lines; for example: username cumulus nopassword | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29131 | NTP does not start when you use the default VRF instead of the management VRF. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-29111 | Due to a packaging error, all switches installed from the same Cumulus Linux image have the same SSH host keys. This affects switches originally installed with Cumulus Linux 4.0.0 and 4.1.0 from a disk image only (including those that were upgraded by apt to a later release).As a result, this issue allows an attacker to more easily bypass remote host verification when a user connects by SSH to what is believed to be a previously used remote host but is really the attacker’s host. For example, this issue can be exploited by a spoofing or man-in-the-middle attack.To resolve this issue, generate new SSH host keys for any switch that has Cumulus Linux 4.0.0 or 4.1.0 installed on it:
After generating new SSH host keys, SSH clients that have previously logged into that switch will see a warning that the switch’s SSH host key changed; this is expected behavior. Be sure to inform anyone who may log in to the switch that you generated new SSH host keys. These users must log in to the affected switches with their SSH clients, where they will be given instructions on how to remove the old SSH host keys from the known hosts files to avoid a spoofing or man-in-the-middle attack directed at their SSH clients.Notes
| 4.0.0-4.1.0 | 4.1.1-4.2.1, 4.2.0-4.2.1 |
| CM-29068 | On the Broadcom switch with the Trident3 ASIC, packet priority remark values assigned from each internal CoS value continue to work with default values; if you change the internal CoS value, the change does not take effect. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-29057 | The following vulnerability was reported in the bluez package. No bluez packages are installed by default on Cumulus Linux 4.x, but libbluetooth3 is available from the repository for optional installation. CVE-2020-0556: It was reported that the BlueZ’s HID and HOGP profile implementations don’t specifically require bonding between the device and the host. Malicious devices can take advantage of this flaw to connect to a target host and impersonate an existing HID device without security or to cause an SDP or GATT service discovery to take place which would allow HID reports to be injected to the input subsystem from a non-bonded source. | 4.0.0-4.1.0 | 4.1.1-4.2.1 |
| CM-29044 | A large number of flapping peers causes FRR to require a corresponding update to internal data structures that track peer information. Updating this internal data structure does not delete links that are down due to the flapping. The size of this array then grows to contain both current peers as well as peers that should have been deleted during the flap processing. The contents of this array is processed by FRR to poll the links, which consumes CPU for all items in the array. This additional polling consumes more CPU than necessary but has no functional impact. To work around this issue, restart FRR. | 3.7.11-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-29043 | When a multipath route that contains an EVPN path exists together with an IPv4 BGP path in the VRF, the RMAC to VTEP binding is incorrect. This invalid entry occurs because Cumulus Linux treats IPv4 routes received over the eBGP IPv4 peering incorrectly in the VRF. To work around this issue, remove the unnecessary eBGP IPv4 peering. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29035 | When you upgrade Cumulus Linux on the EdgeCore AS7726-32X or AS7326-56X switch, you might see firmware errors similar to the following:W: Possible missing firmware /lib/firmware/tigon/tg3_tso5.bin for module tg3 You can safely ignore these error messages. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-29033 | When using apt-get update && apt-get upgrade to upgrade from Cumulus Linux 4.0.0 or 4.1.0 to version 4.1.1 or later, a message similar to the following may appear.Reading package lists… Done To work around this issue and proceed with the upgrade, run apt-get update --allow-releaseinfo-change. | 4.0.0-4.1.0 | 4.1.1-4.2.1 |
| CM-29000 | The net show config and net show time ntp server commands do not show NTP server configuration. | 4.1.0-4.2.0 | 4.2.1 |
| CM-28995 | After you flap an MLAG peerlink, a rare condition might occur where routes and neighbors for VXLAN-enabled VLANs are misprogrammed as non-VXLAN routes and neighbors due to VNI state transitions. This results in a forwarding failure for traffic destined to these misprogrammed routes and neighbors. Note: Do not flap a VNI interface manually. The only expected time for a VNI interface to go down is when the MLAG secondary switch brings the VNIs protodown during a peer link failure where the backup IP address is still active. To recover from this condition, restart switchd with the sudo systemctl restart switchd command. | 3.7.10-3.7.12, 4.1.0-4.1.1 | 3.7.13-4.0.0, 4.2.0-4.2.1 |
| CM-28992 | The following security vulnerability has been announced: CVE-2020-10531: An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp. | 3.0.0-3.7.12, 4.0.0-4.1.0 | 3.7.13-3.7.14, 4.1.1-4.2.1 |
| CM-28982 | On the EdgeCore Minipack-AS8000, when you try to configure ROCEv2, you see errors indicating that PFC is not working properly. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28948 | Cumulus Linux supports a maximum of 300 ACLs for use with 802.1X interfaces. This limit encompasses the default ACLs, pre-auth ACLs and dynamic ACLs. Exceeding this limit can affect the performance of the switch. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28944 | A change in a route map prefix list that should remove a route might not be reflected in the ospf6 database or in peers, and the route might not be deleted.To work around this issue, reenter the redistribute <connected\|static> route-map <route-map-name> statement in the configuration. | 3.6.2-4.1.1 | 4.2.0-4.2.1 |
| CM-28940 | If you configure aggregate-address <address> summary-only before a component of the same aggregate is injected into the BGP table with the network or redistribute command, when you remove the aggregate-address configuration, the component stays suppressed; it is not advertised to peers. For example:Existing configuration: router bgp 1 If you add network 50.0.0.1/32, you see the following (expected) BGP table entries:Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, Removing aggregate-address 50.0.0.0/8 summary-only at this point results in the following (unexpected) BGP table entry:Status codes: s suppressed, d damped, h history, * valid, > best, = multipath, To work around this issue, remove, then re-add the component prefix routes. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-28925 | The global MTU setting in the mtu.json file does not take effect on SVI interfaces after ifreload -a.To work around this issue, run sudo systemctl restart networking or restart the switch.Note: A network restart is a disruptive operation. | 4.1.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28900 | You might see a core file in FRRouting related to OSPFv3 if the switch is configured as both an OSPFv3 ABR and ASBR, and other switches in the same area are also configured as both ABR and ASBR. This issue is not seen with a single ABR or ASBR in an area or if there are multiple ASBRs in an area not acting as ABRs. To work around this issue, do not perform redistribution on more than one ABR in the same area. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28891 | net show configuration commands does not show the RoCE net add interface <swp> storage-optimized pfc configuration. | 4.1.0-4.2.1 | |
| CM-28867 | The QuantaMesh BMS T3048-LY8 switch shows a low fan RPM in syslog. | 3.7.5-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28862 | On the Edgecore AS5812 switch, the Innodisk DIMM causes a DIMM temperature sensor absent alert. | 3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28821 | When configuring VRF route leaking, if you define import vrf route-map <name> but do not have any imported VRFs, the route map command displays incorrectly, and as a result, FRR fails to reload. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-28816 | The following security advisory has been announced for bash: CVE-2019-18276 Qualys scan QID 372268 setuid vulnerability When bash or bash scripts are run setuid, bash is supposed to drop privileges, but does so incorrectly, so that an attacker with command access to the shell can use enable -f for runtime loading of a new builtin that calls setuid() to regain dropped privileges.To work around this issue, do not make bash or bash scripts setuid. | 3.0.0-3.7.14, 4.0.0-4.2.1 | |
| CM-28810 | When the garbage collector does not release memory back to the operating system, clagd might consume a large amount of memory. As a result of low system memory, systemd might shut down services to reclaim memory. | 3.7.11-3.7.12, 4.1.0-4.1.1 | 3.7.13-4.0.0, 4.2.0-4.2.1 |
| CM-28770 | The net add routing route-map <name> permit <seq> set community <comm> command does not add the set statement into the /etc/frr/frr.conf file. | 4.0.0-4.2.1 | |
| CM-28754 | On switches with the Trident2+ ASIC, adding SPAN rules disables PBR rules. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-28682 | On the Mellanox Spectrum switch in an EVPN symmetric configuration with MLAG, simultaneously shutting down the layer 3 interfaces that serve as uplinks to the VXLAN fabric might result in traffic loss of up to 15 seconds. | 4.1.0-4.1.1 | 3.7.14-4.0.0, 4.2.0-4.2.1 |
| CM-28656 | In OVSDB VLAN-aware mode, removing a VTEP binding on the NSX controller fails to clean up all interfaces associated with the logical switch. | 3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28613 | In EVPN Active-Active (MLAG) environments, rebooting one member of an MLAG pair should result in the local MAC mobility sequence number reverting to 0. Sometimes a reboot of one MLAG peer results in the local MAC mobility sequence number being set to a non-zero value despite that no more mobility events occur. This issue is cosmetic only, as BGP does not advertise the incorrect sequence number and forwarding entries correctly point to the remote VTEP where the MAC is now located. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-28611 | In an EVPN Active-Active (MLAG) environment, sometimes a local-to-remote MAC mobility event results in the local sequence number appearing higher than the remote sequence number in zebra. This issue is cosmetic only, as BGP does not advertise the incorrect sequence number and forwarding entries correctly point to the remote VTEP where the MAC is now located. | 3.7.12-3.7.14, 4.0.0-4.2.1 | |
| CM-28596 | On the Dell Z9100 switch, 100G-SR4 modules might not link up reliably in certain ports. swp1, 2, 3, 9, 10, 23, 24, 30, 31, and 32 might be affected To work around this issue, move 100G SR4 modules to one of the ports not affected by this issue. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28497 | QinQ across VXLAN on a traditional bridge does not work. | 4.1.0-4.2.1 | |
| CM-28489 | The following CVEs were announced for rsyslog: CVE-2019-17041 CVE-2019-17042rsyslogd, when receiving remote log messages (not enabled by default on Cumulus Linux) with the pmaisforwardedfrom or pmcisconames optional log parsers (also not enabled by default on Cumulus Linux), is vulnerable to CVE-2019-17041 and CVE-2019-17042 where malicious messages that appear to be from AIX or Cisco respectively may be caused to skip sanity checks, resulting in incorrect negative lengths causing heap overflows. Vulnerable: 8.1901.0-1Recommendation:Do not enable receiving syslog messages from other hosts by the network (with $UDPServerRun or $InputTCPServerRun). Also, do not enable (with $ModLoad) the vulnerable parsers pmaixforwardedfrom or pmcisconames. The default /etc/rsyslog.conf file on Cumulus Linux does not enable any of these. | 4.0.0-4.2.1 | |
| CM-28465 | When you try to configure link-down on a parent interface of a subinterface configured in a VRF, you encounter an error. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28458 | NCLU incorrectly allows you to configure port security on bond/MLAG interfaces. Port security is not supported on bond/MLAG interfaces. | 4.0.0-4.2.1 | |
| CM-28442 | PTM mis-detects incorrect hostnames of LLDP neighbors and does not fail them as expected. Instead they end up in an N/A cabling status. | 3.7.11-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-28441 | If a LLDP neighbor advertises a PortDescr that contains commas, ptmctl -d splits the string on the commas and misplaces its components in other columns. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28393 | On the Dell S5232F-ON switch, EVPN and dynamic VRF route leaking results in the CPU forwarding traffic to newly-learned type-2 routes. To work around this issue, restart FRR. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-28376 | On the Dell S5232F-ON switch, the output of ledmgrd shows amber_blinking but smonctl shows all OK. | 3.7.11-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28340 | Mellanox switches with the Spectrum A0 ASIC that are integrated with VMware NSX experience BFD connectivity issues with service nodes. As a result, VXLAN tunnels do not work. Mellanox switches with the Spectrum A1 ASIC do not have this issue. | 3.7.11-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-28249 | On the Mellanox switch, when you modify the buffer and queue configuration without restarting switchd, you might see a one second interruption in forwarding. | 4.0.0-4.2.1 | |
| CM-28226 | When you restart the hsflowd service, you see a systemd warning message similar to the following:Warning: The unit file, source configuration file or drop-ins of hsflowd@mgmt.service changed on disk. Run ‘systemctl daemon-reload’. | 4.0.0-4.2.1 | |
| CM-28189 | When host-resources and ucd-snmp-mib are polled, you see permission denied messages similar to the following:Jan 30 19:22:53 switch123 snmpd[23172]: Cannot statfs /sys/kernel/debug/tracing: Permission denied | 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-28136 | The MLAG switch pair has VLANs defined that are not used on MLAG bonds. These VLANs still synchronize MAC addresses across to the peer switch. This results in log messages that indicate a MAC address is installed and the VLAN is not defined; for example:RTM_NEWNEIGH with unconfigured vlan XXXX on port peerlink | 3.7.10-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-28080 | TACACS+ through ClearPass is not currently supported. Cumulus Linux sends authorization before authentication, but ClearPass does not accept an authorization before the user is authenticated. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-28078 | On the Broadcom switch with the Trident3 ASC, packet priority remark values assigned from each internal CoS value continue to work with default values; if you change the internal CoS value, the change does not take effect. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28061 | On switches with the Trident3 ASIC, PFC is not working as expected. If you set the PFC for only one CoS, pause frames are sent for all CoS traffic. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-28003 | The FRR service does not provide a way for automation to know if the configuration applied properly. To work around this issue, execute the vtysh -f <file> command in the automation file before starting the FRR service to validate the functional configuration and return an error code. | 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-27999 | On the EdgeCore AS7326-56X switch, the PSU fans show constant LOW warnings. | 3.7.10-3.7.12, 4.0.0-4.2.0 | 3.7.13-3.7.14, 4.2.1 |
| CM-27982 | switchd crashes when dynamic VRF route leaking is enabled and the following is true:
| 3.7.10-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-27957 | If you have configured a higher number of ports and VLANs (ports x VLANs) or the switch is a lower-powered (CPU) platform, the switchd service might fail to send a systemd keepalive within the watchdog timeout value (2 minutes by default) and you see an error similar to the following:bq. systemd[1]: switchd.service watchdog timeout (limit 2min)! To workaround this issue, either reduce the number of configured interfaces and, or VLANs, or increase the systemd timeout for switchd.service.To increase the systemd timeout:
| 3.7.11-3.7.14, 4.0.0-4.2.1 | |
| CM-27950 | On the Dell S5232F, S5248F, S5296F, and S3048 switch, using the poweroff or halt commands does not fully power off the switch. | 4.0.0-4.2.1 | |
| CM-27753 | The EdgeCore Minipack-AS8000 switch supports FEC RS by default; you cannot disable this setting. However, the ethtool --show-fec command output indicates that FEC is disabled. Also, if you try to change the FEC setting, Cumulus Linux reports an error. For example:cumulus@switch:~$ net add interface swp23 link speed 100000 | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27678 | The net show bridge macs command returns an empty interface column.To work around this issue, run the bridge fdb show command to show the interface. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27642 | The following CVEs were announced that affect the libssh package: CVE-2019-14889 has been announced in the libssh library, where unsanitized user-provided scp command lines could allow an attacker to execute arbitrary commands on the server. The libssh library is not installed on Cumulus Linux by default, but is available in the Cumulus Linux 4 repository for optional installation. Note that libssh is distinct from libssh2 and openssh, which are present on the switches and in the repositories. See the following for more information: https://www.libssh.org/security/advisories/CVE-2019-14889.txt https://security-tracker.debian.org/tracker/CVE-2019-14889 | 4.0.0-4.2.1 | |
| CM-27637 | On the EdgeCore Minipack-AS8000 switch, a 100G DAC link does not come up when auto-negotiation is enabled on the neighbor. This switch does not support 100G DAC auto-negotiation at this time. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27581 | On the Delta AG-6248C PoE switch, when you run the apt upgrade command, the upgrade does not work. Cumulus Linux uses uboot directly instead of grub to boot the kernel. Uboot needs a special header to boot the kernel, which is not present. Without this header, when you use the apt upgrade command to upgrade Linux packages, uboot is unable to boot up the kernel.To work around this issue, upgrade Cumulus Linux by installing the Cumulus Linux image. Run the onie-select command to go into ONIE, and then use the nos-install command in ONIE to install a new image.This workaround only works when an out-of-band network is present. | 3.7.11-4.1.1 | 4.2.0-4.2.1 |
| CM-27489 | Mellanox switches might experience higher CPU usage from the sx_sdk service or when BFD is in use.To work around this issue, disable BFD to alleviate some of the CPU load. | 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-27444 | If you use the NCLU commands to configure NTP and run the net add time ntp source <interface> command before you run the net add time ntp server <server> iburst command, the /etc/ntp.conf file is misconfigured.To work around this issue, run the net add time ntp server <server> iburst command before you run the net add time ntp source <interface> command. | 3.7.10-3.7.11, 4.0.0-4.2.1 | 3.7.12-3.7.14 |
| CM-27254 | On the Mellanox switch with the Spectrum and Spectrum-2 ASIC, IPv6 egress ACLs are not supported on subinterfaces. | 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-27243 | The length of the netlink message is not set properly for non-bridge family type messages. The same length is used for both bridge and non-bridge even though the bridge family type message has an extra attribute. This causes extra bytes to be left over in non-bridge family type netlink messages. | 3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-27143 | On the Dell S5248F-ON switch, the CPU core temperature sensors show ABSENT. | 4.0.0-4.2.1 | |
| CM-27136 | With a high number of active routes (20K or more), when you perform a networking restart, the FRR log files might become flooded with error messages associated with the restart. These logs are normal and are not directly a problem. However, the large number of messages can cause the logs to rotate away any previous history, which prevents you from tracing back events leading up to the restart. In a troubleshooting environment, this can be problematic. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27099 | On the Mellanox switch with the Spectrum-2 ASIC, Precision Time Protocol (PTP) is not currently supported. | 4.0.0-4.2.1 | |
| CM-27094 | On the Delta AG9032v1 switch, smonctl and sensors report inaccurate PSU current and power. | 3.5.0-3.7.14, 4.0.0-4.2.1 | |
| CM-27049 | On the Mellanox switch with the Spectrum 2 ASIC, interfaces using 100G or 200G Direct Attach Cables (DACs) do not come up with the interface default configuration. To work around this issue and bring the interfaces up, perform the following configuration on both sides of the link:
| 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-27018 | If you configure more than one VRR interface on an SVI interface, deleting one of the VRR addresses does not remove the interface/address. | 3.7.10-3.7.14, 4.0.0-4.2.1 | |
| CM-26942 | Port security is not currently supported on VX. The NCLU commands produce errors. | 4.0.0-4.2.1 | |
| CM-26921 | If you delete an undefined bond, then add a bond slave, the net commit command fails. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26913 | FRR configuration commands for an SVI interface might have the \n misplaced in the output. For example:sudo sh -c “printf ‘interface 50\nvrf TEST description L3 routing interface\n’ » /etc/frr/frr.conf" should be: sudo sh -c “printf ‘interface 50 vrf TEST\ndescription L3 routing interface\n’ » /etc/frr/frr.conf" To work around this issue, configure the interface manually in the /etc/frr/frr.conf file. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26907 | NCLU incorrectly allows you to apply port security configuration on layer 2 and layer 3 ports that are not part of a bridge. | 4.0.0-4.2.1 | |
| CM-26905 | When you update the hostname of a switch with the NCLU net add hostname <hostname> command, then run net commit, the lldpd service does not restart and other devices still see the old hostname.To work around this issue, run the sudo systemctl restart lldpd.service command. | 3.7.10-3.7.14, 4.0.0-4.2.1 | |
| CM-26875 | After you delete an IPv6 numbered BGP peer group neighbor, Cumulus Linux might continue to send route advertisements. To work around this issue, restart FRR after removing the IPv6 numbered configuration. | 3.7.9-4.1.1 | 4.2.0-4.2.1 |
| CM-26860 | When you run the NCLU net show commit last or net show commit <number> command, where <number> is the last commit, no output is shown. | 4.0.0-4.2.1 | |
| CM-26841 | In the ethool -m output, the Revision Compliance field might show Unallocated when the SFF-8363 Revision Compliance value is SFF-8636 version 2.8 or later. | 4.0.0-4.1.1 | 4.2.0-4.2.1 |
| CM-26769 | Setting ProtoDown on ports populated with SFP modules providing RJ-45 1000BASE-T interfaces does not cause the carrier to be dropped. The kernel shows carrier down; however, the remote device still shows a link. | 3.7.6-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26655 | If you reconfigure an NTP server with NCLU using different trailing options after the IP address (such as iburst), an invalid configuration is added to the /etc/ntp.conf file. For example:net add time ntp server 1.2.3.4 iburst If you need to alter existing server configurations, first remove the server, commit, then re-add the server with any trailing options. | 3.7.9-4.1.1 | 4.2.0-4.2.1 |
| CM-26599 | Auto-negotiation does not work with the QSFP28 cables and a remote system operating at 10G. Attempting to enable auto-negotiation with ethtool -s swp<#> autoneg on returns Operation not supported.To work around this issue, do not use auto-negotiation and set the local port speed to 10G. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26595 | The NCLU net show lldp command displays the speed of a ganged port group as the speed of one of the individual links, rather than the sum of their speeds. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26516 | Applying a policy-based routing (PBR) rule for all traffic from a host might disrupt ARP refresh for that connected host. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-26423 | NCLU requires you to specify an interface with multiple address-virtual statements in ascending MAC address order. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-26412 | Mac learning is not disabled by default on a double tagged peer link interface resulting in the MAC address changing between the MLAG bond and the peer link. To work around this issue, disable MAC learning on QinQ VLANs by adding bridge-learning off to the VLAN stanza in the etc/network/interfaces file. | 3.7.9-3.7.14, 4.0.0-4.2.1 | |
| CM-26308 | An interface alias configured outside FRR using iproute2 is imported into the FRR running configuration and overrides the internal description. After an FRR reload, this causes FRR to delete the interface alias in an inefficient way. Depending on how many interfaces with aliases you have configured, this can cause a FRR reload to time out.To work around this issue, remove the interface alias description from iproute2. | 3.7.8-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26288 | On the Mellanox switch, static VXLAN tunnels incorrectly allow traffic from any remote tunnel IP address. | 3.7.8-3.7.14, 4.0.0-4.2.1 | |
| CM-26256 | The net show evpn vni detail json command includes an extra empty dictionary at the end of the output. | 3.7.8-3.7.14, 4.0.0-4.2.1 | |
| CM-26241 | On the Dell S5248F-ON switch, smond might generate syslog messages indicating that the fan input RPM is lower than the normal low speed of 2500 RPM. Speeds as low as 1700 RPM are acceptable in normal thermal environments; therefore, you can ignore these messages. | 3.7.6-3.7.11, 4.0.0-4.2.1 | 3.7.12-3.7.14 |
| CM-26217 | NCLU does not allow you to configure OSPF NSSAs. For example:cumulus@switch:~$ net add ospf area 0.0.0.1 nssa To work around this issue, use FRR instead. For example: switch# configure terminal | 3.7.7-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26179 | If a hostname contains utf-8 characters, the NCLU net show lldp command outputs the following error:ERROR: ‘ascii’ codec can’t encode character u’\xe9’ in position 3: ordinal not in range(128) | 3.7.7-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-26147 | On the EdgeCore AS4610 switch, the ping command fails unless you run the command with sudo.To work around this issue, run the following commands: cumulus@switch:~$ sudo setcap cap_net_raw+ep /usr/share/mgmt-vrf/bin/ping Run the following command to verify the workaround:
You should see the following output:
| 3.7.6-3.7.10, 4.1.0-4.1.1 | 3.7.11-4.0.0, 4.2.0-4.2.1 |
| CM-26138 | You cannot specify a source and destination MAC address in an ERSPAN ebtables rule. For example, the following rule does not work:-A FORWARD -i swp5 -s 00:25:90:b2:bd:9d -d 50:6b:4b:96:c4:04 -j erspan –src-ip 100.1.1.2 –dst-ip 100.1.1.1 –ttl 64 | 3.7.6-3.7.12, 4.0.0-4.1.1 | 3.7.13-3.7.14, 4.2.0-4.2.1 |
| CM-26137 | ERSPAN in ebtables does not work for VNIs. For example, the following rule does not work:-A FORWARD -i vni10 -j erspan –src-ip 100.1.1.2 –dst-ip 100.1.1.1 –ttl 64 | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-26136 | In an ebtables rule, ERSPAN (upper case) does not work. You need to specify erspan (lower case). | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25986 | On the Mellanox Spectrum-2 switch, the time required to establish a link (from the time a link is set to admin up until the link becomes operationally up) can take up to 15 seconds on 40G interfaces and up to 30 seconds on 100G interfaces.To work around this issue, wait up to 15 seconds on 40G interfaces and 30 seconds on 100G interfaces for the link to establish. | 4.0.0-4.2.1 | |
| CM-25923 | The default route injected through OSPF when you configure default-information originate always is unreliable and might age out unexpectedly.To work around this issue, rely on a different source of default route other than injection with default-information originate. | 3.7.8-4.1.1 | 4.2.0-4.2.1 |
| CM-25890 | In some cases, the switchd service might warn of excessive MAC moves from one switch port to itself (for example, from swp18 to swp18). | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-25859 | The MTU of an SVI cannot be higher than the MTU on the bridge. Changing the MTU on the SVI with NCLU does not update the bridge MTU. The net commit command succeeds even though the MTU is not changed as expected.To work around this issue, change the MTU on all SVIs and the bridge manually in the /etc/network/interfaces file, then apply the change with the ifreload -a command. | 3.7.7-3.7.14, 4.0.0-4.2.1 | |
| CM-25815 | When an SVI with a virtual MAC is configured with a layer 2 VNI in an EVPN environment, if you replace the /etc/network/interfaces file with a different file that does not have the SVI and layer 2 VNI configuration, the original virtual MAC is not populated through the EVPN route until FRR is restarted. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25766 | On the Dell-N3048EP-ON switch, when you run the sudo -E apt upgrade command, the upgrade does not work. | 3.7.7-4.1.1 | 4.2.0-4.2.1 |
| CM-25740 | On the Broadcom Maverick switch with a QinQ configuration, the packets coming into the CPU might be tagged incorrectly; for example, 802.1ad + 802.1q tags are expected in the packets but the packets have 802.1q + 802.1q tags. To work around this issue, configure the bridge with bridge-vlan-protocol 802.1ad:cumulus@switch:~$ net add bridge mybridge vlan-protocol 802.1ad | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25694 | If a packet is policed by ebtables, it does not increment an ACL drop on the ingress interface. Instead, it increments the TDBGC3/6 drop counter to the CPU. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25674 | On Mellanox switches, policer iptables are not working as expected. For example, when using a policer with mode KB/MB/GB to rate-limit interfaces, the syntax is accepted but the data plane transfer speed is not affected by the rule. | 3.7.6-3.7.8, 4.0.0-4.2.1 | 3.7.9-3.7.14 |
| CM-25400 | If an SVI exists in the configuration before you assign it an IP address, when you do assign the IP address with the NCLU command, the vlan-id and the raw-device bridge stanzas are not added automatically. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-25397 | When first creating a bond and enslaving an interface, NCLU hides some of the bridge command suggestions, although they are still accepted. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-24894 | The maximum-prefix configuration under the IPv4 address family has an optional restart value, which you can configure. This configuration is ignored and, instead of restarting the sessions every x minutes, the peer constantly changes between established and idle due to the prefix count being exceeded. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-24799 | On switches with the Trident2 ASIC, 802.1Q-encapsulated control plane traffic received on an interface with 802.1AD configured subinterfaces might be dropped. This issue only affects QinQ configurations. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-24751 | On the QuantaMesh T4048-IX8 or EdgeCore AS7326-56X switch, when using a 1000BASE-T SFP module, the module LEDs do not light to reflect link status. | 3.7.3-4.1.1 | 4.2.0-4.2.1 |
| CM-24652 | In an EVPN environment, the centralized MAC address is not installed on the MLAG pair because Cumulus Linux does not perform an SVI MAC check per VLAN. This issue does not affect a pure distributed routing (symmetric or asymmetric) environment or a pure centralized routing environment. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-24618 | If the interface alias contains a single or double quotation mark, or an apostrophe, the net show configuration commands fail with the following error:ERROR: No closing quotation See /var/log/netd.log for more details. | 3.6.1-3.7.14, 4.0.0-4.2.1 | |
| CM-24473 | SNMP incorrectly requires engine ID specification. | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24435 | When you use NCLU to configure a route map, the parser allows for glob matching of interfaces for a match interface condition when there can only be a single interface matched. The proper syntax is to use multiple route map clauses, each matching a single interface, instead of a single clause matching multiple interfaces. For example, this command is incorrect: net add routing route-map Proxy-ARP permit 25 match interface swp9-10 These commands are correct: net add routing route-map Proxy-ARP permit 25 match interface swp9 net add routing route-map Proxy-ARP permit 30 match interface swp10 | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-24426 | NCLU allows for the configuration of addresses on VRF interfaces, but tab completion for the net add vrf <name> command just displays
Tab completion for the net add vrf <name> ip address <address> command works correctly. | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24379 | On the Maverick switch, CPU forwarded packets might be dropped when there is no route to a leaked host route. | 3.7.5-3.7.14, 4.0.0-4.2.1 | |
| CM-24343 | The net del bridge bridge mcsnoop yes command does not return the value to the default of disabled.To work around this issue, use the net add bridge bridge mcsnoop no command to delete the mcsnoop attribute and return to the default value. | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24332 | On the Broadcom switch, when moving configuration from bridged to routed (or toggling from routed to bridged to routed), some traffic is not seen by the kernel. This can cause BGP to not establish on a transit node. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-24272 | When you try to configure the VRRP priority and advertisement-interval with NCLU on a traditional mode bridge, the net commit command fails.To work around this issue, use the vtysh command (inside FRR) to change the VRRP priority or advertisement-interval on traditional bridges. For example: cumulus@switch:~$ sudo vtysh switch# configure terminal switch(config)# interface br0.100 switch(config-if)# vrrp 1 priority 110 switch(config-if)# vrrp 1 advertisement-interval switch(config-if)# end switch# write memory switch# exit cumulus@switch:~ | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24271 | On SVIs in a VLAN-aware bridge, you cannot change the VRRP priority with NCLU. To work around this issue, run the vtysh command inside FRR to change the default priority. For example: cumulus@switch:~$ sudo vtysh switch# configure terminal switch(config)# interface vlan100 switch(config-if)# vrrp 1 priority 110 switch(config-if)# end switch# write memory switch# exit cumulus@switch:~ | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24270 | Cumulus Linux uses VRRPv3 as the default version, and enables both preempt and accept mode by default. You cannot change these default values with NCLU. To work around this issue, run the vtysh commands (inside FRR) to change the default values. For example: cumulus@switch:~$ sudo vtysh switch# configure terminal switch(config)# interface swp4 switch(config-if)# vrrp 1 version 2 switch(config-if)# no vrrp 1 preempt switch(config-if)# end switch# write memory switch# exit cumulus@switch:~ | 3.7.4-3.7.14, 4.0.0-4.2.1 | |
| CM-24262 | NCLU does not honor auto all in the /etc/network/interfaces file and removes the existing configuration if no individual auto <iface> lines exist. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-24241 | When you try to remove a BGP peer group configuration with NCLU, the command fails but no warning message is shown. For example:cumulus@switch:~$ net del bgp neighbor fabric peer-group ‘router bgp 65001’ configuration does not have ‘neighbor fabric peer-group’ | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-24222 | When an LDAP user that does not have NCLU privileges (either in the netshow or netedit group, or in the /etc/netd.conf file) runs an NCLU command, a traceback occurs instead of a permissions error. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-24035 | On the Edgecore 4610-54P switch, automatic medium-dependent interface crossover (auto-MDIX) stops working on a 100M full duplex interface and does not detect the required cable connection type. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23825 | The net add interface <interface> ptm-enable command adds no ptm-enable for that interface in the frr.conf file.Running the net add or the net del command does not remove no ptm-enable from the frr.conf file. You have to remove it manually using vtysh. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23665 | NCLU automatically adds the VLAN ID (for the layer 3 VNI/SVI) to the bridge when you run net add vxlan <layer3-vni> bridge access <vlan>. This configuration breaks network connectivity in an EVPN symmetric routing configuration using MLAG.To restore connectivity, remove the VLAN ID from the bridge. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23661 | On the Mellanox switch, when you configure a GRE tunnel, the traffic behind the local tunnel endpoint destined through the GRE tunnel is software-forwarded. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23651 | In an EVPN symmetric routing configuration, when an IP address is frozen, kernel neighbor table information and kernel VRF routing table information about the frozen IP address might be out-of-sync. | 3.7.3-3.7.14, 4.0.0-4.2.1 | |
| CM-23584 | When you configure a control plane ACL to define permit and deny rules destined to the local switch, NCLU programs the control plane ACL rules into the FORWARD chain. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23570 | On an RMP/1G-T switch, when you remove link-speed 100 with the NCLU command or by editing the etc/network/interfaces file to revert the 100M interface to the default (1G auto), the interface fails to recover and does not come back up.After you remove the link-speed, ethtool shows the advertised link modes as not reported and Speed/Duplex as unknown.To work around this issue and bring the interface back up, either restart switchd or use ethtool to configure the speed, advertised, duplex or MDI-X settings.Note: The advertised link mode gets set incorrectly if you include 1000baseT/Half. The port will come up successfully at 1G. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23418 | For QSFP modules, the sudo ifdown command does not disable the Tx laser. | 3.7.2-3.7.14, 4.0.0-4.2.1 | |
| CM-23417 | If you use NCLU to create an iBGP peering across the peer link, running the net add bgp l2vpn evpn neighbor peerlink.4094 activate command creates a new eBGP neighborship when one has already been configured for iBGP. This is unexpected; the existing iBGP configuration is valid. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-23311 | In an EVPN centralized routing configuration, where the layer 2 network extends beyond VTEPs, (for example, a host with bridges), the gateway MAC address does not get refreshed in the network when ARP suppression is enabled on the gateway. To work around this issue, disable ARP suppression on the centralized gateway. | 4.0.0-4.2.1 | |
| CM-23075 | There is a limitation on the number of SVI interfaces you can specify as DHCP relay interfaces in the /etc/default/isc-dhcp-relay file. For example, 1500 SVI interfaces causes the dhcrelay service to exit without a core file and logs similar to the following are generated for the interfaces:2018-11-10T23:35:30.992370-08:00 Dev dhcrelay: Listening on LPF/vlan.101/a0:00:00:00:00:51 2018-11-10T23:35:30.993472-08:00 Dev dhcrelay: Sending on LPF/vlan.101/a0:00:00:00:00:51 Eventually the dhcrelay service stops. | 3.7.1-3.7.14, 4.0.0-4.2.1 | |
| CM-23021 | When you run the mstpctl command, you might see the bridge-port state as blocking when it is actually disabled. You might see the same incorrect bridge-port state when other programs or tools use the output of mstpctl; for example, SNMP output from the BRIDGE-MIB. | 3.7.1-3.7.14, 4.0.0-4.2.1 | |
| CM-22554 | If you try to bring down several members of a bond remotely at the same time, the link state of one of the interfaces might not transition correctly to the down state; however, all links show down in hardware. | 3.6.2-3.7.14, 4.0.0-4.2.1 | |
| CM-22386 | The BFD packet redirection logic used by OVSDB server high availability mode redirects BUM packets across the peer link. The iptables rule for redirection does differentiate between BFD and non-BFD VXLAN inner packets because the service node sends all frames with its own IP address as the tunnel source IP address. The VXLAN encapsulated BUM packets do not get forwarded to the CPU and do not go through the iptable redirection rule; only VXLAN encapsulated BFD packets get forwarded to the CPU due to the inner MAC DA lookup in hardware. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-22301 | For an unresolved address, the IPROUTER default policer rule has been modified to not match on packets exiting a TUNNEL and headed to the CPU to resolve the address via ARP. As a result, the following default rule no longer matches TUNNEL ingress packets.A $INGRESS_CHAIN –in-interface $INGRESS_INTF -m addrtype –dst-type IPROUTER -j POLICE –set-mode pkt –set-rate 400 –set-burst 100 These packets are now policed by catch all rules. To work around this issue, the VPORT value on a TRIDENT switch must be changed from binary 011 to 100. | 3.6.1-3.7.14, 4.0.0-4.2.1 | |
| CM-22287 | On the EdgeCore AS7712 (Tomahawk) switch running in atomic mode, when a layer 3 ECMP path is brought down, traffic traversing the path stops working for about four seconds. When the switch is changed to non-atomic mode, the delay is less than one second. This issue is seen across OSPF and static ECMP routes. | 3.6.2-3.7.14, 4.0.0-4.2.1 | |
| CM-22228 | On switches with the Trident 2+ ASIC, counters associated with VLANs and VRFs are not working. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-22041 | At a high CPU transmit traffic rate (for example, if there is unexpected CPU generated flooding or replication in software), when the ASIC packet driver cannot keep up with the transmit rate because there are no free DMA buffers, it can back pressure by suspending the switch port transmit queues. This can fill up the application socket buffers resulting in No buffer space available error messages on protocol sockets.When the driver recovers, it automatically resumes the transmit queues. In most cases these error messages are transient. In rare cases, the hardware queues might get stuck, which you can recover with a switchd restart. | 3.4.3-3.7.14, 4.0.0-4.2.1 | |
| CM-22020 | On the Trident3 switch, static PIM with IIF based on a layer 2 bridge does not work reliably. PIM Join via signaling is required for IPMC to work properly. To work around this issue, use dynamic signaling (joins) to manage IP multicast traffic. | 3.7.0-3.7.14, 4.0.0-4.2.1 | |
| CM-21785 | The source address of the ICMPv6 time exceeded message (traceroute hop) is sourced from the wrong VRF when the traceroute target resides on the same switch but in a different VRF. | 3.6.2-3.7.14, 4.0.0-4.2.1 | |
| CM-21769 | On the Mellanox switch, GRE tunneling does not work if the tunnel source is configured on an SVI interface. If the tunnel source is configured on a physical switch port, then tunneling works as expected. | 3.6.1-3.7.13, 4.0.0-4.1.1 | 3.7.14, 4.2.0-4.2.1 |
| CM-21678 | On a Dell switch with a Maverick ASIC, NetQ might receive false alerts like the following via PagerDuty: cumulus@switch:~$ netq show sensors temp changes | grep absent | grep -v psu P2Leaf01 temp9 networking asic die temp sensor absent 43 105 100 5 Unable to find driver path: /cumulu Add 7d:22h:1m:41s P2Leaf01 temp6 networking asic die temp sensor absent 45 105 100 5 Unable to find driver path: /cumulu Add 7d:22h:1m:41s P2Leaf01 temp6 networking asic die temp sensor absent 47 105 100 5 Unable to read temp4_highest Add 9d:23h:26m:6s P2Leaf01 temp6 networking asic die temp sensor absent 45 105 100 5 Unable to read temp4_highest Add 14d:22h:46m:45s This message might occur as a result of a timeout at the hardware level, or the switch might be reporting a failure to get a response. | 3.5.3-3.7.14, 4.0.0-4.2.1 | |
| CM-21667 | FRR does not add BGP ttl-security to either the running configuration or to the /etc/frr/frr.conf file when configured on a peer group instead of a specific neighbor.To work around this issue, add ttl-security to individual neighbors instead of the peer group. | 3.6.1-3.7.14, 4.0.0-4.2.1 | |
| CM-21278 | The net show lldp command sometimes shows the port description in the Remote Port field. The net show interface command shows the correct value in the Remote Host field.To work around this issue, use net show interface command for LLDP output when connected to Cisco equipment. | 3.5.3-3.7.10, 4.0.0-4.2.1 | 3.7.11-3.7.14 |
| CM-21055 | On the Mellanox switch, the destination MAC address of ERSPAN GRE packets is set to all zeros; therefore, the first transit switch might drop packets. | 3.6.0-3.7.13, 4.0.0-4.2.1 | 3.7.14 |
| CM-20813 | Span rules matching the out-interface as a bond do not mirror packets. | 3.6.0-3.7.14, 4.0.0-4.2.1 | |
| CM-20508 | The Cumulus-Resource-Query-MIB defines the ability to gather buffer utilization status but when these objects are polled, they return nothing. | 3.5.3-3.7.14, 4.0.0-4.2.1 | |
| CM-20033 | The VLAN interface stays up even though the physical link carrying the VLAN is admin or carrier down. | 3.5.2-3.7.14, 4.0.0-4.2.1 | |
| CM-19724 | PIM and MSDP entries are set to the internal COS value of 6 so they are grouped together with the bulk traffic priority group in the default traffic.conf file. However, PIM, IGMP, and MSDP are considered control-plane and should be set to the internal COS value of 7. | 3.5.2-3.7.14, 4.0.0-4.2.1 | |
| CM-19454 | When you use NCLU to bring a bond admin down (net add bond <bond> link down), the bond interface goes into admin down state but the switch ports enslaved to the bond remain UP. If you are using bond-lacp-bypass-allow or balance-xor mode, the host might continue to send traffic. This traffic will be dropped because although the bond slaves are UP, they are not members of the bridge.To work around this issue, use the sudo ifdown <bondname> command. | 3.5.0-3.7.14, 4.0.0-4.2.1 | |
| CM-17934 | FRR tracks interface speed based on the value it learns from the Linux kernel for that interface. If the interface speed changes, FRR does not update its interface speed cache. This can lead to issues for routing protocols that derive metrics from interface speed as the cost can become out of sync with the interface speed. To work around this issue, manually define the routing protocol metric for these interfaces or restart FRR. | 3.7.6-3.7.14, 4.0.0-4.2.1 | |
| CM-17494 | In certain cases, a peer device sends an ARP request from a source IP address that is not on the connected subnet and the switch creates a STALE neighbor entry. Eventually, the switch attempts to keep the entry fresh and sends ARP requests to the host. If the host responds, the switch has REACHABLE neighbor entries for hosts that are not on the connected subnet. To work around this issue, change the value of arp_ignore to 2. See Address Resolution Protocol in the Cumulus Linux user guide for more information. | 3.3.2-3.7.14, 4.0.0-4.2.1 | |
| CM-16571 | NCLU cannot manage rsyslog to addresses routed via a VRF. In Cumulus Linux 4.0.0 and later, management VRF is enabled by default. To work around this issue, update the /etc/network/interfaces file to disable management VRF. | 3.4.3-3.7.14, 4.0.0-4.2.1 | |
| CM-15812 | Multicast forwarding fails for IP addresses whose DMAC overlaps with reserved DIPs. | 3.2.1-3.7.14, 4.0.0-4.2.1 |
Fixed Issues in 4.1.0
| Issue ID | Description | Affects |
|---|---|---|
| CM-28825 | hostapd is not installed in Cumulus Linux 4.0.0 by default.To work around this issue, run the following commands to install the package: cumulus@switch:~$ sudo apt-get update -y | 4.0.0 |
| CM-28794 | When the NETQ agent is active, you see the following errors in in the FFR log file:2020-03-05T16:00:05.036398+09:00 [switch01][bgpd][err] [EC 100663314] Attempting to process an I/O event but for fd: 29(4) no thread to handle this! You also see the following errors in the ptmd log file:2020-03-05T15:59:12.877549+09:00 [switch01][ptmd][info] New client connection fd[17] tot[1] You can ignore these errors. | 4.0.0 |
| CM-28658 | The OVSDB log contains duplicate MAC addresses with the well-known BFD MAC address (00:23:20:00:00:01). This is mainly cosmetic, but clutters the log. | 3.7.12, 4.0.0 |
| CM-28655 | When you remove, then re-add an NSX VTEP binding, the VXLAN VTEP interface is not recreated. | 3.6.1-3.7.12, 4.0.0 |
| CM-28609 | On the Delta AG9032v1 switch, swp5 does not link up using 100G SR4 modules. To work around this issue, use a different port for 100G SR4 modules. | |
| CM-28533 | On the Lenovo NE0152T switch, one power supply (PSU2) always show as ABSENT in smonctl. | 3.7.11-4.0.0 |
| CM-28510 | The following vulnerabilities were discovered in cURL, an URL transfer library. CVE-2019-5481: Thomas Vegas discovered a double-free in the FTP-KRB code, triggered by a malicious server sending a very large data block. CVE-2019-5482: Thomas Vegas discovered a heap buffer overflow that could be triggered when a small non-default TFTP blocksize is used. Vulnerable: 7.64.0-4 Fixed: 7.64.0-4+deb10u1 | 4.0.0 |
| CM-28451 | An error similar to the following shows in syslog for Mellanox switches:2020-02-12T19:59:22.208012+08:00 leaf01 sx_sdk: RM_TABLE: No resources available to add 1 entries to KVD hash Table HW resource To work around this issue, reboot the switch. | 3.7.11-3.7.13, 4.0.0 |
| CM-28374 | When traffic from a double tag interface (facing a different site) is forwarded through VXLAN, the inner tag is not removed. The destination does not know this tag, so it discards it. | 3.7.8-3.7.12, 4.0.0 |
| CM-28372 | On the EdgeCore AS7326-56X switch, the default fan speed, which is defined in the thermal specification, results in excessive fan noise. | 3.7.11-4.0.0 |
| CM-28331 | When you add a route map to advertise IPv4 unicast in a BGP EVPN configuration and the route map contains a set operation, BGP crashes. | 3.7.11-3.7.12 |
| CM-28313 | On the EdgeCore Wedge100 and Facebook Wedge-100S switch, certain physical ports are not correctly mapped to the logical ones. For example: Logical swp39 controls physical swp41 Logical swp40 controls physical swp42 Logical swp43 controls physical swp45 Logical swp44 controls physical swp46 This might causes incorrect forwarding behavior. | 3.7.11, 4.0.0 |
| CM-28276 | When a Trident3 switch receives packets containing an IP checksum value that is not compliant with RFC 1624, the TTL is decremented after a routing operation but the checksum is not recalculated. This results in the IP checksum value being invalid as the packet leaves the switch. | 3.7.10-3.7.11, 4.0.0 |
| CM-28221 | The following security vulnerabilities have been announced in qemu, which is not installed by default on Cumulus Linux but is available in the repository for optional installation: CVE-2019-15890 CVE-2020-7039 CVE-2020-1711: security issues have been found in the SLiRP networking implementation of QEMU, a fast processor emulator, which could result in the execution of arbitrary code or denial of service. https://security-tracker.debian.org/tracker/source-package/qemu Vulnerable: <= 3.1+dfsg-8+deb10u3 Fixed: 3.1+dfsg-8+deb10u4 | 4.0.0 |
| CM-28218 | The following security vulnerability affects libidn2, which is installed by default on Cumulus Linux: CVE-2019-18224: A heap-based buffer overflow vulnerability was discovered in the idn2_to_ascii_4i() function in libidn2, the GNU library for Internationalized Domain Names (IDNs), which could result in denial of service, or the execution of arbitrary code when processing a long domain string. For more information, see: https://security-tracker.debian.org/tracker/libidn2 https://security-tracker.debian.org/tracker/CVE-2019-18224 Vulnerable: 2.0.5-1 Fixed: 2.0.5-1+deb10u1 | 4.0.0 |
| CM-28200 | The Mellanox SN3700C switch experiences a kernel memory leak in the bridge IPv4 multicast receive function. When IGMP snooping is disabled, received IGMP packets are cloned and the clone is not freed, causing a memory leak. Because this memory leak is in the kernel, you cannot clear it by restarting a service; you must reboot the switch to clear the allocated memory. | 4.0.0 |
| CM-28169 | On the Dell Z9264F-ON switch, the CPU core temperature sensors report ABSENT. | 3.7.11, 4.0.0 |
| CM-28160 | On the Broadcom Trident3 switch with DHCP relay, where the DHCP server is reachable through the EVPN overlay, DHCP discover packets forwarded to the CPU might appear corrupt and might not get forwarded. | 3.7.9-3.7.12, 4.0.0 |
| CM-28156 | NCLU crashes when you run the net add interface storage-optimized pfc command because non-ASCII quotes exist in the datapath.conf file.To work around this issue, manually edit the /usr/lib/python2.7/dist-packages/cumulus/__chip_config/mlx/datapath.conf file and replace the non-ASCII single quotes with ASCII single quotes (standard single quote on the keyboard). | 4.0.0 |
| CM-28150 | On the Broadcom switch with the Trident3 ASIC, the ECN-CE bit is set by default on transit traffic. This might result in hosts adjusting traffic behavior if they are configured for the ECN feature. | 4.0.0 |
| CM-28119 | On the Delta AG6248C switch, the NCLU net show system sensors command shows an error:Could not collect output from command: ['/usr/sbin/smonctl’] To work around this issue, run the net show system sensors json command instead. | 4.0.0 |
| CM-28090 | Two security issues were found in the Python interface to the apt package manager, which is installed by default on Cumulus Linux; package downloads from unsigned repositories were incorrectly rejected (CVE-2019-15796) and the hash validation relied on MD5 (CVE-2019-15795). For more information, see https://security-tracker.debian.org/tracker/source-package/python-apt Vulnerable: 1.8.4 Fixed: 1.8.4.1 | 4.0.0 |
| CM-28087 | The last eight ports of the EdgeCore AS4610-54P switch (swp41 through swp48) do not power UPOE access points. | 3.7.11, 4.0.0 |
| CM-28086 | The ospfd daemon might crash with the following kernel trace:2019-11-06T23:00:08.261749+09:00 cumulus ospfd[5339]: Assertion ‘node’ failed in file ospfd/ospf_packet.c, line 671, function ospf_write | 3.7.11-3.7.12, 4.0.0 |
| CM-28081 | The cumulus-overrides package contains the /etc/apt/preferences.d/20_prefer_cumulus file that pins packages from specific release names. The pinning file contains the wrong name.To work around this issue, use the origin instead of the release name. | 4.0.0 |
| CM-28077 | An unhandled exception might occur after you run the sudo poectl -i command. In addition, random poed daemon restarts can occur without any unhandled exceptions but with an invalid response length error. Both issues can occur due to a SerialException.To work around this issue, power cycle the switch. A software reboot does not resolve the issue. | 3.7.10-3.7.11, 4.0.0 |
| CM-28076 | After you hot swap a PSU, the decode-syseeprom -t psuX command shows the old PSU information (such as the serial number), until you run the decode-syseeprom --init command. | 3.6.0-4.0.0 |
| CM-28048 | On the Lenovo NE2580 switch, the fan speeds are higher than expected within normal operating conditions. | 3.7.11, 4.0.0 |
| CM-28038 | After you convert a bond back to a layer 2 access port, ifupdown2 changes all SVI MTUs to 1500. To work around this issue, run ifreload -a a second time. | 3.7.11, 4.0.0 |
| CM-28016 | On the Mellanox Spectrum switch, switchd can sometimes fail when PBR rules are installed or removed from hardware if the rule is setting a next hop learned via a routing protocol. | 3.7.7-3.7.11, 4.0.0 |
| CM-28007 | When you configure Cumulus Linux with a /32 address on a switch port with a configured peer address (for example, to connect to a device using IP unnumbered), the switch sends GARPs for the peer address. | 3.7.5-3.7.11 |
| CM-28000 | The following security advisory has been announced for the libxen packages, which are not installed by default in Cumulus Linux but are available in the repository for installation: Debian Security Advisory DSA-4602-1 CVE-2019-17349 CVE-2019-17350 CVE-2019-18420 CVE-2019-18421 CVE-2019-18422 CVE-2019-18423 CVE-2019-18424 CVE-2019-18425 CVE-2019-19577 CVE-2019-19578 CVE-2019-19579 CVE-2019-19580 CVE-2019-19581 CVE-2019-19582 CVE-2019-19583 CVE-2018-12207 CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 CVE-2019-11135 CVE-2019-17348 CVE-2019-17347 CVE-2019-17346 CVE-2019-17345 CVE-2019-17344 CVE-2019-17343 CVE-2019-17342 CVE-2019-17341 CVE-2019-17340 Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks. In addition this update provides mitigations for the “TSX Asynchronous Abort" speculative side channel attack. For additional information, refer to https://xenbits.xen.org/xsa/advisory-305.html For more information, see https://security-tracker.debian.org/tracker/xen . Fixed version: 4.11.3+24-g14b62ab3e5-1~deb10u1. | 4.0.0 |
| CM-27995 | When enabled on an egress interface, SPAN does not work. | |
| CM-27947 | Broadcom Field Alert - SID - MMU 2B Errors A few of the MMU memories on Broadcom switches are grouped together with single parity control. During SER correction when a parity error occurs on one of those groups, other memory in that group might also report a SER error. This occurs when the memory is accessed either by a packet hit or through a schan operation. This issue can cause SER errors in other memory and cause traffic mis-forwarding or a packet drop. | 3.7.0-3.7.11, 4.0.0 |
| CM-27875 | The Mellanox SN3700C switch does not forward LLDP or LACP traffic. | 4.0.0 |
| CM-27855 | The FRR cl-support module times out on switches on the ARM platform even when the switch is not under heavy load. To work around this issue, run the cl-support -M command to disable timeouts. | 3.7.0-3.7.11, 4.0.0 |
| CM-27814 | A traditional bridge with QinQ and a VNI does not work for tagged traffic. | 3.7.10-3.7.13 |
| CM-27801 | On the Mellanox SN3700C switch, if you try to break out 100G switch ports into 2x50G, the configuration fails and switchd does not restart. Breaking out the ports into 4x25G works without issue. | 4.0.0 |
| CM-27793 | A security vulnerability has been announced in the cyrus-sasl2 (libsasl2-2 and libsasl2-modules) package. The libraries are installed by default on Cumulus Linux. CVE-2019-19906: Stephan Zeisberg reported an out-of-bounds write vulnerability in the _sasl_add_string() function in cyrus-sasl2, a library implementing the Simple Authentication and Security Layer. A remote attacker can take advantage of this issue to cause denial-of-service conditions for applications using the library. Vulnerable: 2.1.27+dfsg-1 Fixed: 2.1.27+dfsg-1+deb10u1 | 3.0.0-4.0.0 |
| CM-27764 | On the EdgeCore AS7326-56X switch, eth0 and swp1 use the same MAC address. | 3.7.9-3.7.11, 4.0.0 |
| CM-27740 | When you run the NCLU net del all command to delete all configuration on the switch, you see an error similar to the following:ERROR: [Errno 2] No such file or directory: ‘/cumulus/switchd/config/interface/ | 4.0.0 |
| CM-27737 | On the EdgeCore AS7326-56X switch, you might see the RPM of certain fans run over the maximum threshold. | 3.7.11 |
| CM-27719 | Several vulnerabilities have been discovered in the interpreter for the Ruby language, which could result in unauthorized access by bypassing intended path matchings, denial of service, or the execution of arbitrary code. These vulnerabilities affect the ruby2.5 package that is available for optional installation in Cumulus Linux 4.x, but is not installed by default. CVE-2019-15845: Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 mishandles path checking within File.fnmatch functions. CVE-2019-16201: WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network. CVE-2019-16254: Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. CVE-2019-16255: Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the “command” argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method. Vulnerable: 2.5.5-3 | 4.0.0 |
| CM-27699 | In a default VX instance, a ping to a device’s hostname fails. To work around this issue, edit the /etc/gai.conf file and uncomment precedence ::ffff:0:0/96 10. | 4.0.0 |
| CM-27670 | A memory leak in switchd might occur, which causes switchd to restart. | 3.7.10-3.7.11, 4.0.0 |
| CM-27645 | Several vulnerabilities have been discovered in git, a fast, scalable, distributed revision control system, which is installed by default on Cumulus Linux 4.x. CVE-2019-1348: export-marks is insecure, fix is to disable by default. CVE-2019-1349: .git / git~1 filename vulnerability on NTFS CVE-2019-1352: .git vulnerability with NTFS Alternate Streams Accesses CVE-2019-1353: NTFS filesystem protection should be on by default CVE-2019-1387: dubiously-nested submodule git directories should be disallowed CVE-2019-19604: submodule update repository code execution vulnerability Vulnerable: <= 2.20.1-2 Fixed: 2.20.1-2+deb10u1 | 4.0.0 |
| CM-27644 | Ifupdown2 does not set up the front panel interface for the dhclient to accept the DHCP OFFER.To work around this issue, restart the networking service after ifreload -a with the systemctl restart networking command. | 3.7.10-3.7.11, 4.0.0 |
| CM-27619 | The following security vulnerabilities have been announced in the nss/libnss3 library, which is not installed by default but is available in the repository: CVE-2019-11745: Out-of-bounds write when passing an output buffer smaller than the block size to NSC_EncryptUpdate CVE-2019-17007: nss: Handling of Netscape Certificate Sequences in CERT_DecodeCertPackage() may crash with a NULL deref leading to DoS See https://security-tracker.debian.org/tracker/source-package/nss for more information. Vulnerable: <= 3.42.1-1+deb10u1 | 4.0.0 |
| CM-27586 | CPU usage might be higher than normal if you have a high number of interfaces x VLANs and lldpd is active. This issue is introduced with code changes in Cumulus Linux 3.7.11, where VLAN information is now available for LLDP to advertise to neighbors (https://docs.cumulusnetworks.com/version/cumulus-linux-37/Layer-2/Link-Layer-Discovery-Protocol/#vlan-dot1-tlv). You might see high CPU usage even if VLAN (dot1) TLV configuration is disabled.To check if lldpd is the heavy CPU resource user, run the following command:cumulus@switch:~$ ps -eo user,pid,ppid,cmd,%mem,%cpu –sort=-%cpu | head Alternatively, check for messages in the /var/log/syslog directory similar to:2020-02-20T15:02:12.137857-05:00 leaf01 sysmonitor: High CPU use: 87% Note: The exact amount of CPU usage varies in each network based on a number of factors; however, it is unusual for lldpd to consume more than 30% CPU for an extended period of time.To work around this issue, you can do one of the following:
| 3.7.11-3.7.12, 4.0.0 |
| CM-27547 | Trident2+ switches do not enable DFE for 10G and 4x10G DACs. As a result, longer or marginal 10G DACs might not link up reliably. To work around this issue, run the following command after a reboot. On the SFP side: echo CR > /cumulus/switchd/config/interface/swp${port}/interface_mode ; doneOn the QSFP side: echo CR > /cumulus/switchd/config/interface/swp${port}/interface_mode ; done | 4.0.0 |
| CM-27517 | When hsflowd is used on the switch, you might experience a kernel panic. | 4.0.0 |
| CM-27507 | The ports.conf file on the Dell S5248F-ON switch does not show port ganging or breakout options. | 3.7.10-3.7.11 |
| CM-27496 | All Broadcom Trident3 X7 switches contain PCIE firmware, which is programmed by the vendor when the switch is manufactured. The latest version of this firmware (2.6) is incompatible with Cumulus Linux 3.7.11 and earlier, and Cumulus Linux 4.0. To work around this issue, downgrade the Broadcom ASIC firmware to an earlier version. | 3.7.11, 4.0.0 |
| CM-27457 | If you delete, then re-add a PBR policy on an interface, the configured PBR policy is not programmed in the kernel or switchd. | 3.7.9-3.7.10, 4.0.0 |
| CM-27456 | After making a series of PBR configuration changes using NCLU commands, the stale PBR entry is still present in the kernel. | 3.7.9-3.7.10, 4.0.0 |
| CM-27367 | On the Mellanox switch with the Spectrum or Spectrum-2 ASIC, switchd might crash, then restart under certain conditions. | 4.0.0 |
| CM-27354 | On the Celestica Pebble switch, if you use IPv6 routes with mask /65 to /127, the switchd log fills with errors. | 3.7.10-3.7.13 |
| CM-27351 | On rare occasions, after rebooting the MLAG secondary switch, one MLAG device might see the peer as down, which can cause traffic disruption to connected hosts. | 3.7.7-3.7.10 |
| CM-27299 | The protocol daemon bgpd crashes when a link/neighbor flaps if static routes pointing to Null0 are advertising through BGP.To work around this issue, reboot the switch, then remove the static routes or stop advertising these routes. | 3.7.9-3.7.10, 4.0.0 |
| CM-27295 | IPv6 table rules might affect forwarding. For example, if you create the following rule in the /etc/cumulus/acl/policy.d/03-sshd.rules file, the rule counter increments but IPv4 SSH traffic might be dropped.[ip6tables] | 3.7.2-3.7.11, 4.0.0 |
| CM-27275 | CVE-2018-12207: Improper invalidation for page table updates by a virtual guest operating system for multiple Intel(R) Processors may allow an authenticated user to potentially enable denial of service of the host system via local access. Running hypervisors for virtual guest operating systems is not supported on Cumulus Linux. Additionally, an affected package qemu is not included in the image, although it is available on upstream repo mirrors. | 4.0.0 |
| CM-27229 | On a traditional bridge, VLAN tagged traffic is not discarded when it exceeds the port security MAC limit. | 4.0.0 |
| CM-27193 | The l1-show command prints a traceback for switch ports that have sub-interfaces configured. There is no functional impact to traffic but the l1-show troubleshooting and validation command does not execute on switch ports that have VLAN sub-interfaces. | 3.7.10, 4.0.0 |
| CM-27184 | With the port security feature, if you change the number of MAC addresses allowed to access a port with the NCLU net add interface <port> port-security mac-limit <number> command, the net show configuration commands command might fail. | 4.0.0 |
| CM-27173 | On the Trident3 switch, unicast ARP packets received on a VNI and forwarded to the CPU are not policed. | 3.7.10-3.7.13, 4.0.0 |
| CM-27118 | The Broadcom switch with the Tomahawk3 ASIC, such as the EdgeCore Minipack AS8000, might not learn all MAC address on a port configured for bridging when the hardware MAC table is near the maximum capacity. | 4.0.0 |
| CM-27096 | On the Edgecore AS6812 switch, you might see rare I2C errors. | 3.7.2-3.7.10, 4.0.0 |
| CM-27025 | On the Mellanox switch, ACL lookups are performed for VLAN matches when no rules with UNTAGGED match are present. | 3.7.2-3.7.10, 4.0.0 |
| CM-26996 | On the Mellanox switch with the Spectrum ASIC, the --set-burst parameter in an iptables rule does not take effect. | 3.7.10, 4.0.0 |
| CM-26968 | When networking fails to start properly, an MLAG memory leak occurs, which might cause memory issues. | 3.7.9-3.7.10, 4.0.0 |
| CM-26961 | On the Mellanox switch, error messages with hw-management-thermal-events.sh are displayed on shutdown. | 4.0.0 |
| CM-26839 | On the Dell S5248F-ON switch, CPU core temp sensors may show as ABSENT. | 4.0.0 |
| CM-26838 | You might experience a bgpd memory usage increase and significant update exchanges due to host moves between VTEPs. | 3.7.7-3.7.10, 4.0.0 |
| CM-26525 | When an MLAG peerlink frequently alternates states between learning and blocking, an excessive number of TCP sessions might be created, which results in the following error display:OSError: [Errno 24] Too many open files | 3.6.2-3.7.10, 4.0.0 |
| CM-26450 | Cumulus Linux poed generates excessive debug log entries. These will be reduced in a future release. | 3.7.3-3.7.10, 4.0.0 |
| CM-26448 | Traffic sent to the SVI IP address of a switch might be lost if all of the following conditions are met:
To workaround this issue, restart switchd. | 3.7.9-3.7.10, 4.0.0 |
| CM-26225 | On the EdgeCore AS5712, AS6712, AS5812 and AS6812 switch, support for multiple PSU types results in log messages similar to the following:2019-09-05T05:15:17.246597+00:00 hp-6712-03 decode-syseeprom: Unable to find eeprom at /sys/bus/i2c/devices/11-0050/eeprom for psu2 | 3.7.9-3.7.12, 4.0.0 |
| CM-26200 | The following CVEs were announced that affect the systemd-resolved package. Cumulus Linux does not enable systemd-resolved by default, so Cumulus Linux is not vulnerable as shipped.CVE-2019-15718 Missing access controls on systemd-resolved’s D-Bus interface Source Package Release Version Status: buster 241-7 vulnerable For the detailed security status, refer to the security tracker page at: https://security-tracker.debian.org/tracker/CVE-2019-15718 | 4.0.0 |
| CM-26158 | On the Mellanox switch, UFT profiles are unable to support the documented capacity for routes to addresses that are more than 64 bits in length. The listed capacities assume 64-bit destination IP addresses. | 3.7.8-3.7.10, 4.0.0 |
| CM-26024 | On switches with the Spectrum ASIC, the underlay hashes VXLAN packets for a given overlay flow randomly. To work around this issue, configure the ECMP hash seed to the same value on the EVPN egress leaf switches. | 3.7.7-3.7.12, 4.0.0 |
| CM-25693 | After you issue the NCLU net del bgp vrf <vrf> autonomous-system <AS> command and commit the change, Cumulus Linux does not remove the configuration from the /etc/frr/frr.conf file or the net show config commands. | 3.7.3-3.7.10, 4.0.0 |
| CM-25665 | On the Broadcom Trident 3 switch, VXLAN encapsulated packets are dropped on the ingress port (tagged layer 2 port) during transit forwarding (the local switch does not terminate the VXLAN tunnel). An example of where this two-layer VXLAN inside VXLAN encapsulation might occur:
| 3.7.5-3.7.11, 4.0.0 |
| CM-25641 | If the BMC operating system fails to respond to IPMI, you see a traceback in bmcd and all the sensors might report ABSENT devices in smonctl.To work around this issue, power cycle the switch. | 3.7.6-3.7.12, 4.0.0 |
| CM-25505 | In EVPN symmetric or centralized configurations with BGP peering over a peer link, VXLAN routed packets transiting an MLAG peer are dropped until the clagd init-delay timer expires during the bring-up sequence following a reboot.The problem is caused by a race condition when programming the anycast IP address (used to terminate VXLAN tunnels), where the hardware is programmed before the software by clagd.To work around this issue, configure the BGP path across the peer link to be less preferred. The example below uses AS path prepending and the MLAG switches are iBGP neighbors. However, other BGP configurations achieve the same result. In the /etc/frr/frr.conf file, make a new AS path access list and route map to apply BGP pre-pending of the local ASN one or more times. For example:
| 3.7.6-3.7.10, 4.0.0 |
| CM-24993 | When you try to change the NTP time zone with the NCLU net add time zone <timezone> command or by editing the /etc/timezone file manually, the configuration does not take effect.To work around this issue, change the time zone with the sudo timedatectl set-timezone <timezone> command. For example:cumulus@switch:~$ sudo timedatectl set-timezone US/Eastern | 4.0.0 |
| CM-23397 | On the Broadcom switch, when a link-local multicast frame is received on an access port with a VNI in the bridge, two copies of the packet are sent across the VNI to remote VTEPs and the receiving hosts observe duplicate packets. | 3.6.2-4.0.0 |
| CM-22794 | The Dell S5048F-ON switch (with reverse airflow, rear to front), shows the Temp-3 sensor as absent. | 3.6.2-4.0.0 |
| CM-22591 | CVE-2018-5391 (FragmentSmack) is a network vulnerability where an attacker can trigger time and calculation expensive fragment reassembly with specially crafted packets, leading to a denial of service. On a Cumulus Linux switch, the impact is limited to control plane and management plane traffic. Any control plane traffic coming in the front panel ports will be limited by existing policer ACLs. To work around this issue, create a file called /etc/sysctl.d/ip.conf and add these settings:net.ipv4.ipfrag_low_thresh = 196608 | 3.7.0-3.7.11, 4.0.0 |
| CM-22277 | On the Broadcom switch with the Trident3 ASIC, the ECN-CE bit is set by default on transit traffic. This might result in hosts adjusting traffic behavior if they are configured for the ECN feature. In Cumulus Linux 3.7.11, the default behavior changed; the ECN-CE bit is no longer set by default on transit traffic. | 3.7.3-3.7.10, 4.0.0 |
| CM-21898 | On a Trident3 switch, IGMP packets are not policed by the police rule in the 00control ACL file. The packets are policed by the catchall policer in the 99control ACL file instead.-A $INGRESS_CHAIN -p ipv4 -d 01:00:5e:00:00:00/ff:ff:ff:80:00:00 -j police --set-mode pkt --set-rate 100 --set-burst 100To work around this issue, let the CPU bound IGMP packet hit the following rule and change the policer rate to a desired value for IGMP packets: -A $INGRESS_CHAIN -p ipv4 -d 01:00:5e:00:00:00/ff:ff:ff:80:00:00 -j police --set-mode pkt --set-rate 100 --set-burst 100Typically, the destination MAC address 01:00:5e:xx:xx:xx is used only for PIM/IGMP control and data stream packets. However, this workaround cannot handle data stream multicast packets that are not TCP/UDP; this is not typically done. | 3.6.2-3.7.12, 4.0.0 |
| CM-18727 | On the Mellanox SN-2100 switch, unicast packets are counted in multicast queue counters. | 3.4.3-3.7.10 |
| CM-18192 | In FRR, bgp_snmp does not show all BGP peers when peer groups used. | 3.7.11-4.0.0 |