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In the Linux kernel, the following vulnerability has been resolved:
ipv4: validate checksum_start before completing checksum
If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt the network header and cause a bunch of mischief.
This was discovered and reported by Paulos, and has been reporoduced by others independently since.
We really shouldn't allow such packets in, but as a defence in depth measure, let's also check before we complete the checksum.
A more complete validation at input is forthcoming, but needs more work.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-debug-develUpgrade kernel-headersUpgrade kernel-rt-debug-modules-extraUpgrade kernel-develUpgrade kernel-modules-extraUpgrade kernel-toolsUpgrade kernel-rtUpgrade perfUpgrade rvUpgrade kernel-docUpgrade rtlaUpgrade libperfUpgrade kernel-rt-64k-modules-extraUpgrade kernel-64k-devel-matchedUpgrade kernel-64k-modules-extraUpgrade kernel-debug-devel-matchedUpgrade kernel-modulesUpgrade kernel-zfcpdump-develUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-modules-coreUpgrade kernel-abi-stablelistsUpgrade kernel-debugUpgrade kernel-debug-modules-extraUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-64k-debug-modules-coreUpgrade kernel-64k-modules-coreUpgrade kernel-64k-develUpgrade kernel-coreUpgrade kernel-rt-debug-develUpgrade kernel-debug-coreUpgrade kernel-devel-matchedUpgrade kernel-uki-virtUpgrade kernel-debug-uki-virtUpgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-modulesUpgrade kernel-modules-coreUpgrade kernel-zfcpdumpUpgrade kernel-64k-debug-modules-extraUpgrade kernel-64k-debugUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debug-coreUpgrade kernel-rt-64k-develUpgrade kernel-cross-headersUpgrade kernel-debug-modules-coreUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-debug-modulesUpgrade kernel-64k-coreUpgrade kernel-64k-modulesUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-64kUpgrade kernel-rt-coreUpgrade kernel-rt-develUpgrade kernel-tools-libsUpgrade kernel-rt-64k-modulesUpgrade kernel-64k-debug-modulesUpgrade kernel-rt-debugUpgrade python3-perfUpgrade kernel-64kUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-tools-libs-develUpgrade kernel-64k-debug-develUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-modules-extraUpgrade kernel-rt-64k-debugUpgrade kernelUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-64k-coreUpgrade kernel-64k-debug-coreUpgrade kernel-64k-debug-devel-matched | Oct 21, 2026 | Oct 20, 2026 |
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-livepatch-4.14.355-287.753Upgrade bpftoolUpgrade kernel-livepatch-5.15.221-157.262Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade kernel-toolsUpgrade kernel-develUpgrade kernel-livepatch-5.10.269-270.1108Upgrade bpftool-debuginfoUpgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade python-perfUpgrade perf-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-aarch64Upgrade perfUpgrade python-perf-debuginfo | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.18-toolsUpgrade perfUpgrade perf-debuginfoUpgrade kernel6.18-modules-extraUpgrade bpftool6.18-debuginfoUpgrade python3-perfUpgrade kernel-tools-develUpgrade microvm-kernel6.18Upgrade kernel-toolsUpgrade kernel6.18-debuginfo-common-x86_64Upgrade kernel6.18-headersUpgrade kernel-modules-extra-commonUpgrade kernel6.18-develUpgrade kernel6.18-tools-develUpgrade kernel6.18-debuginfoUpgrade kernelUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade python3-perf-debuginfoUpgrade bpftool6.18Upgrade bpftool-debuginfoUpgrade perf6.18Upgrade kernel-debuginfo-common-x86_64Upgrade kernel6.18-modules-extra-commonUpgrade kernel-debuginfoUpgrade bpftoolUpgrade python3-perf6.18-debuginfoUpgrade python3-perf6.18Upgrade kernel-livepatch-6.18.54-121.166Upgrade kernel-modules-extraUpgrade kernel6.18-tools-debuginfoUpgrade kernel6.18Upgrade kernel-headersUpgrade perf6.18-debuginfoUpgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade kernel-livepatch-6.1.188-233.385 | Oct 20, 2026 | Oct 15, 2026 |
| Debian | — | Upgrade linux | Oct 20, 2026 | Oct 15, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Oct 22, 2026 | Oct 15, 2026 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | Oct 19, 2026 | Oct 15, 2026 |
| Rocky_linux | — | Upgrade kernel-rt-develUpgrade kernel-rt-debuginfoUpgrade python3-perfUpgrade rvUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-develUpgrade kernel-rtUpgrade kernel-debug-uki-virtUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-toolsUpgrade kernel-modules-extraUpgrade kernel-uki-virtUpgrade kernel-rt-debug-debuginfoUpgrade kernel-rt-debug-coreUpgrade python3-perf-debuginfoUpgrade perfUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-coreUpgrade kernel-rt-modulesUpgrade kernel-rt-debugUpgrade kernel-tools-libsUpgrade kernel-debuginfo-common-s390xUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-debug-modulesUpgrade kernel-debug-devel-matchedUpgrade kernel-debugUpgrade kernel-debug-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-tools-libs-develUpgrade kernel-rt-modules-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-modules-coreUpgrade kernel-debug-develUpgrade kernel-debug-coreUpgrade libperf-debuginfoUpgrade kernel-coreUpgrade kernel-debug-modules-extraUpgrade kernel-debug-modules-coreUpgrade kernelUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-modulesUpgrade libperfUpgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-develUpgrade kernel-rt-debug-develUpgrade kernel-debuginfoUpgrade rtlaUpgrade kernel-devel-matched | Oct 23, 2026 | Oct 22, 2026 |
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