In the Linux kernel, the following vulnerability has been resolved:
net: Fix icmp host relookup triggering ip_rt_bug
arp link failure may trigger ip_rt_bug while xfrm enabled, call trace is:
WARNING: CPU: 0 PID: 0 at net/ipv4/route.c:1241 ip_rt_bug+0x14/0x20 Modules linked in: CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc6-00077-g2e1b3cc9d7f7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 RIP: 0010:ip_rt_bug+0x14/0x20 Call Trace: <IRQ> ip_send_skb+0x14/0x40 __icmp_send+0x42d/0x6a0 ipv4_link_failure+0xe2/0x1d0 arp_error_report+0x3c/0x50 neigh_invalidate+0x8d/0x100 neigh_timer_handler+0x2e1/0x330 call_timer_fn+0x21/0x120 __run_timer_base.part.0+0x1c9/0x270 run_timer_softirq+0x4c/0x80 handle_softirqs+0xac/0x280 irq_exit_rcu+0x62/0x80 sysvec_apic_timer_interrupt+0x77/0x90
The script below reproduces this scenario: ip xfrm policy add src 0.0.0.0/0 dst 0.0.0.0/0 \ dir out priority 0 ptype main flag localok icmp ip l a veth1 type veth ip a a 192.168.141.111/24 dev veth0 ip l s veth0 up ping 192.168.141.155 -c 1
icmp_route_lookup() create input routes for locally generated packets while xfrm relookup ICMP traffic.Then it will set input route (dst->out = ip_rt_bug) to skb for DESTUNREACH.
For ICMP err triggered by locally generated packets, dst->dev of output route is loopback. Generally, xfrm relookup verification is not required on loopback interfaces (net.ipv4.conf.lo.disable_xfrm = 1).
Skip icmp relookup for locally generated packets to fix it.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linux | May 15, 2025 | Dec 27, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade python3-perfUpgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade kernel | Mar 18, 2025 | Dec 27, 2024 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel | Apr 11, 2025 | Dec 27, 2024 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernel-tools-libsUpgrade bpftoolUpgrade kernelUpgrade python3-perf | Mar 19, 2025 | Dec 27, 2024 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernelUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-toolsUpgrade python3-perf | Apr 1, 2025 | Dec 27, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernelUpgrade python3-perfUpgrade kernel-tools-libsUpgrade kernel-tools | Mar 18, 2025 | Dec 27, 2024 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | May 15, 2025 | Dec 27, 2024 |
| Ubuntu | — | Upgrade linux-image-genericUpgrade linux-image-realtime-hwe-24.04Upgrade linux-image-6.8.0-58-genericUpgrade linux-image-azureUpgrade linux-image-gcpUpgrade linux-image-6.8.1-1020-realtimeUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1028-gcpUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.11.0-1011-awsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-lowlatency-hwe-24.04Upgrade linux-image-6.11.0-1012-azureUpgrade linux-image-6.11.0-21-genericUpgrade linux-image-6.8.0-58-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-24.04Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.11.0-1011-lowlatencyUpgrade linux-image-6.8.0-1026-nvidiaUpgrade linux-image-azure-fdeUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1026-oemUpgrade linux-image-6.8.0-1026-nvidia-lowlatency-64kUpgrade linux-image-generic-64kUpgrade linux-image-ibm-classicUpgrade linux-image-lowlatencyUpgrade linux-image-ibmUpgrade linux-image-oem-22.04aUpgrade linux-image-6.11.0-1007-realtimeUpgrade linux-image-nvidiaUpgrade linux-image-6.11.0-1013-oracleUpgrade linux-image-6.8.0-2023-raspi-realtimeUpgrade linux-image-generic-lpaeUpgrade linux-image-gkeopUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-azure-lts-24.04Upgrade linux-image-raspiUpgrade linux-image-azure-nvidiaUpgrade linux-image-oem-22.04Upgrade linux-image-oem-24.04bUpgrade linux-image-oem-22.04cUpgrade linux-image-6.11.0-1011-lowlatency-64kUpgrade linux-image-6.8.0-58-generic-64kUpgrade linux-image-6.8.0-1026-nvidia-lowlatencyUpgrade linux-image-awsUpgrade linux-image-oracleUpgrade linux-image-6.8.0-1024-oracleUpgrade linux-image-virtualUpgrade linux-image-6.8.0-1027-azure-fdeUpgrade linux-image-6.11.0-21-generic-64kUpgrade linux-image-6.8.0-1014-azure-nvidiaUpgrade linux-image-6.8.0-1010-gkeopUpgrade linux-image-6.8.0-1024-ibmUpgrade linux-image-6.8.0-1026-nvidia-64kUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-kvmUpgrade linux-image-realtimeUpgrade linux-image-6.11.0-1011-gcpUpgrade linux-image-6.8.0-1028-raspiUpgrade linux-image-6.8.0-1027-awsUpgrade linux-image-nvidia-64k-6.8Upgrade linux-image-aws-lts-24.04Upgrade linux-image-6.11.0-1012-azure-fdeUpgrade linux-image-gkeUpgrade linux-image-6.8.0-1023-gkeUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.8.0-1024-oracle-64kUpgrade linux-image-6.8.0-1027-azureUpgrade linux-image-6.11.0-1013-oracle-64kUpgrade linux-image-6.8.0-1028-gcp-64kUpgrade linux-image-6.11.0-1010-raspiUpgrade linux-image-nvidia-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-oem-22.04bUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-oem-24.04Upgrade linux-image-6.8.0-58-lowlatency-64kUpgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.11.0-1017-oemUpgrade linux-image-6.11.0-1011-gcp-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-gcp-64kUpgrade linux-image-oem-24.04aUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-oracle-64kUpgrade linux-image-nvidia-64k | Mar 28, 2025 | Dec 27, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Feb 3, 2025 | Dec 27, 2024 |
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