In the Linux kernel, the following vulnerability has been resolved:
net/net_failover: fix txq exceeding warning
The failover txq is inited as 16 queues. when a packet is transmitted from the failover device firstly, the failover device will select the queue which is returned from the primary device if the primary device is UP and running. If the primary device txq is bigger than the default 16, it can lead to the following warning: eth0 selects TX queue 18, but real number of TX queues is 16
The warning backtrace is: [ 32.146376] CPU: 18 PID: 9134 Comm: chronyd Tainted: G E 6.2.8-1.el7.centos.x86_64 #1 [ 32.147175] Hardware name: Red Hat KVM, BIOS 1.10.2-3.el7_4.1 04/01/2014 [ 32.147730] Call Trace: [ 32.147971] <TASK> [ 32.148183] dump_stack_lvl+0x48/0x70 [ 32.148514] dump_stack+0x10/0x20 [ 32.148820] netdev_core_pick_tx+0xb1/0xe0 [ 32.149180] __dev_queue_xmit+0x529/0xcf0 [ 32.149533] ? __check_object_size.part.0+0x21c/0x2c0 [ 32.149967] ip_finish_output2+0x278/0x560 [ 32.150327] __ip_finish_output+0x1fe/0x2f0 [ 32.150690] ip_finish_output+0x2a/0xd0 [ 32.151032] ip_output+0x7a/0x110 [ 32.151337] ? __pfx_ip_finish_output+0x10/0x10 [ 32.151733] ip_local_out+0x5e/0x70 [ 32.152054] ip_send_skb+0x19/0x50 [ 32.152366] udp_send_skb.isra.0+0x163/0x3a0 [ 32.152736] udp_sendmsg+0xba8/0xec0 [ 32.153060] ? __folio_memcg_unlock+0x25/0x60 [ 32.153445] ? __pfx_ip_generic_getfrag+0x10/0x10 [ 32.153854] ? sock_has_perm+0x85/0xa0 [ 32.154190] inet_sendmsg+0x6d/0x80 [ 32.154508] ? inet_sendmsg+0x6d/0x80 [ 32.154838] sock_sendmsg+0x62/0x70 [ 32.155152] ____sys_sendmsg+0x134/0x290 [ 32.155499] ___sys_sendmsg+0x81/0xc0 [ 32.155828] ? _get_random_bytes.part.0+0x79/0x1a0 [ 32.156240] ? ip4_datagram_release_cb+0x5f/0x1e0 [ 32.156649] ? get_random_u16+0x69/0xf0 [ 32.156989] ? __fget_light+0xcf/0x110 [ 32.157326] __sys_sendmmsg+0xc4/0x210 [ 32.157657] ? __sys_connect+0xb7/0xe0 [ 32.157995] ? __audit_syscall_entry+0xce/0x140 [ 32.158388] ? syscall_trace_enter.isra.0+0x12c/0x1a0 [ 32.158820] __x64_sys_sendmmsg+0x24/0x30 [ 32.159171] do_syscall_64+0x38/0x90 [ 32.159493] entry_SYSCALL_64_after_hwframe+0x72/0xdc
Fix that by reducing txq number as the non-existent primary-dev does.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernel-develUpgrade perf-debuginfoUpgrade perfUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade bpftoolUpgrade python-perf-debuginfoUpgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-livepatch-5.10.177-158.645Upgrade kernel-livepatch-5.15.106-64.140Upgrade kernel-debuginfo-common-x86_64Upgrade kernel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade python3-perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade kernel-develUpgrade kernel-libbpf-staticUpgrade perfUpgrade kernel-tools-debuginfoUpgrade python3-perf-debuginfoUpgrade kernel-livepatch-6.1.23-36.46Upgrade kernel-libbpfUpgrade kernel-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade bpftool-debuginfoUpgrade kernel-libbpf-develUpgrade perf-debuginfo | Feb 20, 2026 | Dec 30, 2025 |
| Debian | — | Upgrade linux | Dec 31, 2025 | Dec 31, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel-toolsUpgrade bpftoolUpgrade python3-perfUpgrade kernel | Mar 10, 2026 | Mar 10, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 30, 2025 |
| Ubuntu | — | Upgrade linux-gcpUpgrade linux-gcp-5.4Upgrade linux-iotUpgrade linux-azure-fipsUpgrade linux-gkeopUpgrade linux-azure-5.15Upgrade linux-ibm-5.4Upgrade linux-aws-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-ibmUpgrade linux-azure-5.4Upgrade linux-nvidiaUpgrade linux-kvmUpgrade linux-oracleUpgrade linuxUpgrade linux-intel-iot-realtimeUpgrade linux-oracle-5.15Upgrade linux-gcp-fipsUpgrade linux-hwe-5.4Upgrade linux-intel-iotg-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-intel-iotgUpgrade linux-lowlatency-hwe-5.15Upgrade linux-gkeUpgrade linux-nvidia-tegra-5.15Upgrade linux-lowlatencyUpgrade linux-hwe-5.15Upgrade linux-aws-5.15Upgrade linux-raspi-5.4Upgrade linux-aws-5.4Upgrade linux-riscv-5.15Upgrade linux-raspiUpgrade linux-ibm-5.15Upgrade linux-fipsUpgrade linux-awsUpgrade linux-bluefieldUpgrade linux-nvidia-tegraUpgrade linux-azureUpgrade linux-realtimeUpgrade linux-oracle-5.4Upgrade linux-gcp-5.15 | Jan 6, 2026 | Jan 2, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 30, 2025 |
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