In the Linux kernel, the following vulnerability has been resolved:
igb: Fix igb_down hung on surprise removal
In a setup where a Thunderbolt hub connects to Ethernet and a display through USB Type-C, users may experience a hung task timeout when they remove the cable between the PC and the Thunderbolt hub. This is because the igb_down function is called multiple times when the Thunderbolt hub is unplugged. For example, the igb_io_error_detected triggers the first call, and the igb_remove triggers the second call. The second call to igb_down will block at napi_synchronize. Here's the call trace: __schedule+0x3b0/0xddb ? __mod_timer+0x164/0x5d3 schedule+0x44/0xa8 schedule_timeout+0xb2/0x2a4 ? run_local_timers+0x4e/0x4e msleep+0x31/0x38 igb_down+0x12c/0x22a [igb 6615058754948bfde0bf01429257eb59f13030d4] __igb_close+0x6f/0x9c [igb 6615058754948bfde0bf01429257eb59f13030d4] igb_close+0x23/0x2b [igb 6615058754948bfde0bf01429257eb59f13030d4] __dev_close_many+0x95/0xec dev_close_many+0x6e/0x103 unregister_netdevice_many+0x105/0x5b1 unregister_netdevice_queue+0xc2/0x10d unregister_netdev+0x1c/0x23 igb_remove+0xa7/0x11c [igb 6615058754948bfde0bf01429257eb59f13030d4] pci_device_remove+0x3f/0x9c device_release_driver_internal+0xfe/0x1b4 pci_stop_bus_device+0x5b/0x7f pci_stop_bus_device+0x30/0x7f pci_stop_bus_device+0x30/0x7f pci_stop_and_remove_bus_device+0x12/0x19 pciehp_unconfigure_device+0x76/0xe9 pciehp_disable_slot+0x6e/0x131 pciehp_handle_presence_or_link_change+0x7a/0x3f7 pciehp_ist+0xbe/0x194 irq_thread_fn+0x22/0x4d ? irq_thread+0x1fd/0x1fd irq_thread+0x17b/0x1fd ? irq_forced_thread_fn+0x5f/0x5f kthread+0x142/0x153 ? __irq_get_irqchip_state+0x46/0x46 ? kthread_associate_blkcg+0x71/0x71 ret_from_fork+0x1f/0x30
In this case, igb_io_error_detected detaches the network interface and requests a PCIE slot reset, however, the PCIE reset callback is not being invoked and thus the Ethernet connection breaks down. As the PCIE error in this case is a non-fatal one, requesting a slot reset can be avoided. This patch fixes the task hung issue and preserves Ethernet connection by ignoring non-fatal PCIE errors.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade python-perf-debuginfoUpgrade kernel-livepatch-5.15.152-100.162Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-toolsUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade perfUpgrade kernel-livepatch-4.14.322-244.536Upgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade bpftoolUpgrade kernel-livepatch-5.10.192-182.736Upgrade kernel-tools-devel | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-libbpf-staticUpgrade kernel-debuginfoUpgrade kernel-livepatch-6.1.49-69.116Upgrade kernelUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade python3-perfUpgrade perfUpgrade kernel-tools-develUpgrade kernel-libbpf-develUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade python3-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-libbpf | Sep 30, 2025 | Sep 15, 2025 |
| Debian | — | Upgrade linux | Sep 17, 2025 | Sep 17, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-tools-libsUpgrade kernelUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perf | Jan 15, 2026 | Jan 13, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade bpftoolUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernelUpgrade python3-perfUpgrade bpftoolUpgrade kernel-abi-stablelists | Feb 3, 2026 | Jan 30, 2026 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rt | Nov 14, 2025 | Sep 15, 2025 |
| Ubuntu | — | Upgrade linux-gkeUpgrade linux-oracle-5.15Upgrade linux-nvidia-tegraUpgrade linux-azure-fdeUpgrade linux-raspi-5.4Upgrade linux-oracle-5.4Upgrade linux-raspiUpgrade linux-gcp-5.15Upgrade linux-bluefieldUpgrade linux-riscv-5.15Upgrade linux-ibm-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-fipsUpgrade linux-azureUpgrade linux-hwe-5.15Upgrade linux-aws-5.4Upgrade linux-nvidia-tegra-5.15Upgrade linux-realtimeUpgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-lowlatencyUpgrade linux-iotUpgrade linuxUpgrade linux-hwe-5.4Upgrade linux-gcp-fipsUpgrade linux-nvidia-tegra-igxUpgrade linux-ibmUpgrade linux-azure-fipsUpgrade linux-nvidiaUpgrade linux-azure-5.4Upgrade linux-gcpUpgrade linux-intel-iotg-5.15Upgrade linux-gcp-5.4Upgrade linux-xilinx-zynqmpUpgrade linux-intel-iot-realtimeUpgrade linux-intel-iotgUpgrade linux-ibm-5.4Upgrade linux-gkeopUpgrade linux-azure-5.15Upgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-kvm | Sep 19, 2025 | Sep 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 15, 2025 |
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