{"id":"CVE-2026-97417","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()\n\nThe timestamp-only fast path dereferences the option stream as\n*(__be32 *)ptr, which assumes 4-byte ali…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()\n\nThe timestamp-only fast path dereferences the option stream as\n*(__be32 *)ptr, which assumes 4-byte ali…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7ecfa46a536578a7ed335ddf31a854127268c27c","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4abc1af7ac209c066f4e5dd75cdd56876e5829a9","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d3bf9eae486490832bd08fd62ab0ac601f346bd4","Linux < 6.12.111","Linux < 6.18.53","Linux (all versions)"],"published":"2026-09-24","updated":"2026-09-25","sourceUpdated":"2026-09-25T05:17:04.853","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97417","references":[{"url":"https://git.kernel.org/stable/c/4abc1af7ac209c066f4e5dd75cdd56876e5829a9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7ecfa46a536578a7ed335ddf31a854127268c27c","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d3bf9eae486490832bd08fd62ab0ac601f346bd4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-24T16:47:15.885Z","slug":"CVE-2026-97417","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()\n\nThe timestamp-only fast path dereferences the option stream as\n*(__be32 *)ptr, which assumes 4-byte alignment that the TCP option\nstream does not guarantee. Use get_unaligned_be32() instead, which\nreads the value safely and already returns host byte order, so the\nhtonl() on the comparison constant can be dropped.\n\nThis matches the existing get_unaligned_be32() use later in the same\nfunction.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":210579,"id":"CVE-2026-97417","ts":1790316054923,"field":"cvss","old":null,"new":"7.5"},{"seq":210578,"id":"CVE-2026-97417","ts":1790316054923,"field":"severity","old":"none","new":"high"}]}