{"schema":"threatline.record/2","record":{"id":"CVE-2026-99056","aliases":[],"summary":"strparser: make sure __strp_recv isn't running before tearing down the parser","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nstrparser: make sure __strp_recv isn't running before tearing down the parser\n\nThe comment above strp_done() claims that if strp is stopped,\nstrp_recv will no longer be called. That's only true if the caller has\na mechanism (eg locking) to guarantee that strp_recv() calls that\nstarted before strp_stop() have completed by the time we call\nstrp_done().\n\nThis adds a dummy lock_sock/release_sock pair to guarantee that any\nin-flight strp_recv() (which runs under either bh_lock_sock or\nlock_sock, depending if it's called from ->sk_data_ready or strp_work)\nhas completed.\n\nOnly espintcp can be affected by this race condition, but this patch\nmakes sure no future user of strp can have the bug.\n\nThis could crash on strp->sk (\"general mode\" of strp), but this mode\nhas been here for 9 years and has never been used. It'll be gone soon,\nno point worrying about it.\n\nSwitch the stopped/paused/etc bits to u8's to avoid races between\nstrp_stop() and strp_pause/unpause().\n\nA reproducer has been published and turns the possible UAF into an\nexploit [1].","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99056","source_modified_at":"2026-10-23T12:22:42.234Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","lessThan":"a18dd388045dc7263d99a07db9de4e0f149ca8f1","status":"affected","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","lessThan":"9f3e9fe1b155e9b4572054d8d140586bc3512ecf","status":"affected","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","lessThan":"d2b5f637b9b67a79a50d42614d10653c13b4e449","status":"affected","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","lessThan":"eaa3a29004c063d7e9d5ea55636f693f67e6db0f","status":"affected","versionType":"git"},{"version":"e27cca96cd68fa2c6814c90f9a1cfd36bb68c593","lessThan":"0984ebc631792acf8fff105112ee74a6b8f1efcc","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99056","source_modified_at":"2026-10-23T12:22:42.234Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.6","status":"affected"},{"version":"0","lessThan":"5.6","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-2026-99056","source_modified_at":"2026-10-23T12:22:42.234Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"9f3e9fe1b155e9b4572054d8d140586bc3512ecf","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99056","source_modified_at":"2026-10-23T12:22:42.234Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"0984ebc631792acf8fff105112ee74a6b8f1efcc","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":"2026-10-23T12:22:42.234Z","modified_at":"2026-10-23T12:22:42.234Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99056","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:22:42.234Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/a18dd388045dc7263d99a07db9de4e0f149ca8f1"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9f3e9fe1b155e9b4572054d8d140586bc3512ecf"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/d2b5f637b9b67a79a50d42614d10653c13b4e449"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/eaa3a29004c063d7e9d5ea55636f693f67e6db0f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0984ebc631792acf8fff105112ee74a6b8f1efcc"}],"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":"2026-10-23T12:22:42.234Z","content_hash":"5dd398fd62359b681c38260e59d8e92f3765acbf4e40e6163d232492c7047e31"}}