In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()
The timestamp-only fast path dereferences the option stream as *(__be32 *)ptr, which assumes 4-byte alignment that the TCP option stream does not guarantee. Use get_unaligned_be32() instead, which reads the value safely and already returns host byte order, so the htonl() on the comparison constant can be dropped.
This matches the existing get_unaligned_be32() use later in the same function.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-coreUpgrade perfUpgrade kernel-debugUpgrade kernel-docUpgrade kernel-rt-debug-modules-extraUpgrade kernel-tools-libsUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-modules-extraUpgrade kernel-rt-coreUpgrade kernel-cross-headersUpgrade python3-perfUpgrade kernel-modulesUpgrade kernel-rt-develUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-coreUpgrade kernel-debug-develUpgrade kernel-coreUpgrade kernel-rt-debugUpgrade bpftoolUpgrade kernel-develUpgrade kernel-rt-modulesUpgrade kernel-debug-modulesUpgrade kernel-rt-modules-extraUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdumpUpgrade kernel-rtUpgrade kernel-tools-libs-develUpgrade kernel-toolsUpgrade kernel-zfcpdump-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-headers | Oct 11, 2026 | Oct 5, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel6.12-modules-extraUpgrade kernel6.12-tools-develUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-modules-extra-commonUpgrade bpftool6.12Upgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12Upgrade perf6.12-debuginfoUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-develUpgrade kernel6.12-toolsUpgrade perf6.12Upgrade kernel6.12-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade python3-perf6.12Upgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-headersUpgrade kernel-livepatch-6.12.111-136.204 | Oct 13, 2026 | Sep 24, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 30, 2026 | Sep 24, 2026 |
| Redhat_linux | — | No solution existsUpgrade kernelUpgrade kernel-rt | Sep 28, 2026 | Sep 24, 2026 |
| Rocky_linux | — | Upgrade kernel-rt-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-develUpgrade kernel-debug-debuginfoUpgrade kernel-debug-coreUpgrade python3-perfUpgrade perf-debuginfoUpgrade kernel-rt-debug-kvmUpgrade kernel-toolsUpgrade kernel-rt-debuginfoUpgrade kernel-debugUpgrade bpftool-debuginfoUpgrade perfUpgrade kernel-rt-modulesUpgrade kernel-rtUpgrade kernel-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-modulesUpgrade kernel-debuginfoUpgrade kernel-coreUpgrade kernel-tools-debuginfoUpgrade kernel-rt-debug-coreUpgrade kernel-rt-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debug-modulesUpgrade kernel-rt-kvmUpgrade kernel-rt-coreUpgrade kernel-tools-libsUpgrade kernel-rt-modules-extraUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-debugUpgrade kernel-tools-libs-develUpgrade kernel-rt-debug-debuginfoUpgrade python3-perf-debuginfoUpgrade bpftoolUpgrade kernel | Oct 7, 2026 | Oct 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2026 | Sep 24, 2026 |
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