{"schema":"threatline.record/2","record":{"id":"CVE-2026-99064","aliases":[],"summary":"cipso: adjust cached option offsets when removing CIPSO","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ncipso: adjust cached option offsets when removing CIPSO\n\ncipso_v4_skbuff_delattr() removes the CIPSO bytes but does not adjust\ncached offsets for options that follow them.\n\nFor example, with a valid 10-byte CIPSO option followed by a seven-byte\nRR option, parsing records rr at offset 30.  Removing CIPSO moves RR to\noffset 20, while the cached offset remains 30.  Consumers such as\nip_forward_options() and __ip_options_echo() then access the wrong bytes;\nthe latter may interpret packet data as the option length and copy it into\nfixed-size option storage.\n\nMirror cipso_v4_delopt() and subtract cipso_len from the srr, rr, ts and\nrouter_alert offsets when they follow CIPSO.  cipso_len is the distance\nthe first memmove() shifts those options.  The later header move and\nnetwork-header reset relocate the bytes and their offset base together.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99064","source_modified_at":"2026-10-23T12:23:05.854Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"89aa3619d141d6cfb6040a561aebb6d99d3e2285","lessThan":"b965977126a90e01825814c859ba4788691eddd3","status":"affected","versionType":"git"},{"version":"89aa3619d141d6cfb6040a561aebb6d99d3e2285","lessThan":"2200fe1d6148b78e1b8f00f4b2bd47760015077f","status":"affected","versionType":"git"},{"version":"89aa3619d141d6cfb6040a561aebb6d99d3e2285","lessThan":"6e49d611a9cfbaac927b8fa80ebd4f6b1f37ada0","status":"affected","versionType":"git"},{"version":"89aa3619d141d6cfb6040a561aebb6d99d3e2285","lessThan":"6d25ffca055a77787c21a36b66c253f76239411b","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99064","source_modified_at":"2026-10-23T12:23:05.854Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.10","status":"affected"},{"version":"0","lessThan":"6.10","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.11","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99064","source_modified_at":"2026-10-23T12:23:05.854Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"2200fe1d6148b78e1b8f00f4b2bd47760015077f","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99064","source_modified_at":"2026-10-23T12:23:05.854Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6e49d611a9cfbaac927b8fa80ebd4f6b1f37ada0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99064","source_modified_at":"2026-10-23T12:23:05.854Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6d25ffca055a77787c21a36b66c253f76239411b","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T12:23:05.854Z","modified_at":"2026-10-23T12:23:05.854Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99064","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:23:05.854Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/b965977126a90e01825814c859ba4788691eddd3"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2200fe1d6148b78e1b8f00f4b2bd47760015077f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6e49d611a9cfbaac927b8fa80ebd4f6b1f37ada0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6d25ffca055a77787c21a36b66c253f76239411b"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T12:23:05.854Z","content_hash":"258a051bb002fa6e75baafe2a31588f6bbe20e8182dae47824f36cc238382143"}}