{"schema":"threatline.record/2","record":{"id":"CVE-2026-99071","aliases":[],"summary":"ipv4: do not warn on route notification size race","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: do not warn on route notification size race\n\nCommit 680aea08e78c (\"net: ipv4: Emit notification when fib hardware\nflags are changed\") added asynchronous route notifications for hardware\nflag changes.\n\nfib_alias_hw_flags_set() sizes the skb with fib_nlmsg_size() and later\nfills it with fib_dump_info() while holding only RCU.  With nexthop\ncompatibility mode enabled, a concurrent replacement can grow the group\nbetween these independent snapshots.  fib_dump_info() can then\nlegitimately return -EMSGSIZE, so the warning does not prove a sizing bug.\n\nRemove the warning.  The existing error path still frees the skb and\nreports the error to listeners.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99071","source_modified_at":"2026-10-23T12:23:14.297Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"680aea08e78c003292415518ad270bc20f9c80b1","lessThan":"088ba80eef85fa7a5ad8f9e7c82b403c99242b56","status":"affected","versionType":"git"},{"version":"680aea08e78c003292415518ad270bc20f9c80b1","lessThan":"78a1cf5c54b2f795c81fedb530755a8d01cc84f0","status":"affected","versionType":"git"},{"version":"680aea08e78c003292415518ad270bc20f9c80b1","lessThan":"7dfa7ca97f3ac46353edd4cc44f7733758e4535b","status":"affected","versionType":"git"},{"version":"680aea08e78c003292415518ad270bc20f9c80b1","lessThan":"221ef5e1e44a044790f0f54e6aa237883f475a4d","status":"affected","versionType":"git"},{"version":"680aea08e78c003292415518ad270bc20f9c80b1","lessThan":"e02a5b6588161673ef75a4bc5cdfb62bd493374d","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99071","source_modified_at":"2026-10-23T12:23:14.297Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.12","status":"affected"},{"version":"0","lessThan":"5.12","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","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-2026-99071","source_modified_at":"2026-10-23T12:23:14.297Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"088ba80eef85fa7a5ad8f9e7c82b403c99242b56","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99071","source_modified_at":"2026-10-23T12:23:14.297Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"78a1cf5c54b2f795c81fedb530755a8d01cc84f0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99071","source_modified_at":"2026-10-23T12:23:14.297Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"7dfa7ca97f3ac46353edd4cc44f7733758e4535b","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99071","source_modified_at":"2026-10-23T12:23:14.297Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"221ef5e1e44a044790f0f54e6aa237883f475a4d","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":"2026-10-23T12:23:14.297Z","modified_at":"2026-10-23T12:23:14.297Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99071","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:23:14.297Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/088ba80eef85fa7a5ad8f9e7c82b403c99242b56"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/78a1cf5c54b2f795c81fedb530755a8d01cc84f0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/7dfa7ca97f3ac46353edd4cc44f7733758e4535b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/221ef5e1e44a044790f0f54e6aa237883f475a4d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e02a5b6588161673ef75a4bc5cdfb62bd493374d"}],"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":"2026-10-23T12:23:14.297Z","content_hash":"4027d935c3c8ecc61778eb0b5eddfcb0adb8ea726f97917916d96d970fb4400f"}}