In the Linux kernel, the following vulnerability has been resolved:
ipv6: prevent infinite loop in rt6_nlmsg_size()
While testing prior patch, I was able to trigger an infinite loop in rt6_nlmsg_size() in the following place:
list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, fib6_siblings) { rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); }
This is because fib6_del_route() and fib6_add_rt2node() uses list_del_rcu(), which can confuse rcu readers, because they might no longer see the head of the list.
Restart the loop if f6i->fib6_nsiblings is zero.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade kernel-debuginfo-common-x86_64Upgrade kernel6.12-modules-extraUpgrade kernel-libbpf-develUpgrade kernel-livepatch-6.12.46-66.121Upgrade kernel6.12-libbpfUpgrade bpftool6.12Upgrade perf-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-libbpf-staticUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-libbpf-develUpgrade perf6.12Upgrade kernel-modules-extra-commonUpgrade kernelUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-headersUpgrade kernel6.12-tools-develUpgrade kernel6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-toolsUpgrade kernel-tools-debuginfoUpgrade python3-perf6.12Upgrade kernel-libbpf-staticUpgrade kernel6.12-headersUpgrade kernel-libbpf-debuginfoUpgrade bpftool-debuginfoUpgrade python3-perfUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel-debuginfo-common-aarch64Upgrade perf6.12-debuginfoUpgrade kernel-libbpfUpgrade bpftoolUpgrade kernel-modules-extraUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel6.12-develUpgrade python3-perf-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-livepatch-6.1.148-173.267Upgrade perf | Sep 9, 2025 | Aug 19, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Sep 8, 2025 | Sep 8, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade kernel-toolsUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade python3-perfUpgrade kernel-tools-libsUpgrade bpftool | Mar 17, 2026 | Mar 16, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade python3-perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel | Mar 10, 2026 | Mar 10, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Oct 16, 2025 | Aug 19, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Aug 19, 2025 |
| Suse | — | Upgrade kernel-azure-optionalUpgrade dtb-caviumUpgrade cluster-md-kmp-64kbUpgrade dtb-appleUpgrade kernel-azureUpgrade kernel-default-vdsoUpgrade kernel-rt-livepatchUpgrade reiserfs-kmp-defaultUpgrade dtb-broadcomUpgrade dlm-kmp-64kbUpgrade kernel-docs-htmlUpgrade dtb-sprdUpgrade kernel-64kb-extraUpgrade kernel-default-livepatch-develUpgrade gfs2-kmp-defaultUpgrade kernel-debug-develUpgrade dtb-exynosUpgrade kernel-rt-vdsoUpgrade kernel-source-azureUpgrade ocfs2-kmp-defaultUpgrade kernel-develUpgrade kernel-default-develUpgrade kernel-debug-vdsoUpgrade kernel-source-rtUpgrade kernel-64kbUpgrade kernel-rt-optionalUpgrade kernel-default-livepatchUpgrade ocfs2-kmp-64kbUpgrade kernel-default-optionalUpgrade kernel-obs-buildUpgrade kernel-sourceUpgrade cluster-md-kmp-rtUpgrade kernel-rt-extraUpgrade dtb-alteraUpgrade dtb-xilinxUpgrade dtb-amazonUpgrade kselftests-kmp-64kbUpgrade gfs2-kmp-azureUpgrade kernel-default-baseUpgrade dtb-nvidiaUpgrade kselftests-kmp-azureUpgrade dtb-qcomUpgrade dtb-renesasUpgrade kernel-kvmsmall-vdsoUpgrade reiserfs-kmp-64kbUpgrade dtb-freescaleUpgrade dtb-marvellUpgrade dtb-allwinnerUpgrade kernel-azure-extraUpgrade dlm-kmp-rtUpgrade dtb-lgUpgrade kernel-source-vanillaUpgrade kernel-rt_debug-develUpgrade ocfs2-kmp-azureUpgrade dtb-hisiliconUpgrade reiserfs-kmp-rtUpgrade kernel-rt-develUpgrade kernel-rtUpgrade kernel-devel-azureUpgrade dtb-amlogicUpgrade kernel-macrosUpgrade kernel-azure-develUpgrade ocfs2-kmp-rtUpgrade kselftests-kmp-rtUpgrade kernel-symsUpgrade kernel-debugUpgrade cluster-md-kmp-azureUpgrade kernel-64kb-optionalUpgrade kernel-docsUpgrade kernel-syms-rtUpgrade dtb-amdUpgrade kernel-default-base-rebuildUpgrade dlm-kmp-defaultUpgrade kernel-64kb-develUpgrade dtb-apmUpgrade kernel-syms-azureUpgrade kernel-rt_debugUpgrade kernel-defaultUpgrade dtb-mediatekUpgrade cluster-md-kmp-defaultUpgrade kernel-zfcpdumpUpgrade kernel-rt-livepatch-develUpgrade kernel-obs-qaUpgrade kernel-kvmsmallUpgrade kernel-devel-rtUpgrade dtb-armUpgrade kselftests-kmp-defaultUpgrade gfs2-kmp-rtUpgrade dlm-kmp-azureUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-64kbUpgrade kernel-azure-vdsoUpgrade reiserfs-kmp-azureUpgrade kernel-rt_debug-vdsoUpgrade dtb-socionextUpgrade dtb-rockchipUpgrade kernel-default-extra | Dec 5, 2025 | Sep 18, 2025 |
| Ubuntu | — | Upgrade linux-image-azure-fips-6.8Upgrade linux-image-virtual-hwe-24.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.14.0-1017-oracleUpgrade linux-image-oem-24.04aUpgrade linux-image-nvidiaUpgrade linux-image-ibmUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.14.0-1020-gcpUpgrade linux-image-gkeop-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1043-gkeUpgrade linux-image-6.8.0-1046-aws-fipsUpgrade linux-image-6.8.0-100-lowlatency-64kUpgrade linux-image-6.8.0-1046-azure-fipsUpgrade linux-image-6.14.0-1016-oemUpgrade linux-image-6.8.0-100-genericUpgrade linux-image-6.8.0-1047-gcp-fipsUpgrade linux-image-6.8.1-1041-realtimeUpgrade linux-image-generic-64k-6.8Upgrade linux-image-oem-22.04bUpgrade linux-image-generic-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatencyUpgrade linux-image-realtime-hwe-22.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-100-fipsUpgrade linux-image-gcp-fips-6.8Upgrade linux-image-6.14.0-36-generic-64kUpgrade linux-image-6.8.0-1046-azureUpgrade linux-image-kvmUpgrade linux-image-oem-6.14Upgrade linux-image-raspi-realtimeUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-64kUpgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1023-xilinxUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-aws-6.8Upgrade linux-image-6.8.0-1046-awsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-gkeopUpgrade linux-image-ibm-6.8Upgrade linux-image-fips-6.8Upgrade linux-image-realtime-hwe-24.04Upgrade linux-image-generic-lpaeUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-gcp-fipsUpgrade linux-image-6.8.0-1043-oracleUpgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1046-nvidia-lowlatency-64kUpgrade linux-image-raspi-realtime-6.8Upgrade linux-image-generic-64kUpgrade linux-image-6.8.0-1046-nvidia-64kUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-lowlatencyUpgrade linux-image-gcpUpgrade linux-image-6.14.0-1017-aws-64kUpgrade linux-image-oem-22.04cUpgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1043-oracle-64kUpgrade linux-image-fipsUpgrade linux-image-oem-22.04Upgrade linux-image-oracle-64k-6.14Upgrade linux-image-6.8.0-1043-gke-64kUpgrade linux-image-oem-22.04aUpgrade linux-image-6.14.0-1017-oracle-64kUpgrade linux-image-xilinxUpgrade linux-image-6.8.0-1046-aws-64kUpgrade linux-image-virtualUpgrade linux-image-azure-fipsUpgrade linux-image-genericUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-gkeUpgrade linux-image-6.8.0-1047-raspiUpgrade linux-image-6.8.0-1030-gkeopUpgrade linux-image-xilinx-6.8Upgrade linux-image-aws-fips-6.8Upgrade linux-image-6.8.0-2037-raspi-realtimeUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-6.8Upgrade linux-image-intel-iotgUpgrade linux-image-azure-6.8Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-6.8.0-100-generic-64kUpgrade linux-image-aws-64kUpgrade linux-image-raspiUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.14.0-1017-awsUpgrade linux-image-6.14.0-1017-azureUpgrade linux-image-oracle-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-6.8.0-1047-gcpUpgrade linux-image-raspi-6.8Upgrade linux-image-gke-64k-6.8Upgrade linux-image-6.14.0-1020-gcp-64kUpgrade linux-image-aws-6.14Upgrade linux-image-6.14.0-36-genericUpgrade linux-image-azure-6.14Upgrade linux-image-6.8.0-1047-gcp-64kUpgrade linux-image-6.14.0-1016-realtimeUpgrade linux-image-virtual-6.14Upgrade linux-image-oracle-6.14Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-generic-6.14Upgrade linux-image-6.14.0-1018-raspiUpgrade linux-image-aws-fipsUpgrade linux-image-gcp-6.14Upgrade linux-image-gcp-6.8Upgrade linux-image-intel-iot-realtimeUpgrade linux-image-oem-22.04dUpgrade linux-image-gke-64kUpgrade linux-image-generic-64k-6.14Upgrade linux-image-awsUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-azureUpgrade linux-image-aws-64k-6.14Upgrade linux-image-6.8.0-1046-nvidiaUpgrade linux-image-oracleUpgrade linux-image-oem-24.04Upgrade linux-image-lowlatency-6.8Upgrade linux-image-6.8.0-100-lowlatencyUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-raspi-6.14Upgrade linux-image-gcp-64k-6.14Upgrade linux-image-gcp-64kUpgrade linux-image-6.8.0-1044-ibmUpgrade linux-image-virtual-6.8Upgrade linux-image-realtimeUpgrade linux-image-realtime-6.14Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gke-6.8 | Nov 25, 2025 | Nov 21, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 3, 2025 | Aug 19, 2025 |
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