{"schema":"threatline.record/2","record":{"id":"CVE-2026-97523","aliases":[],"summary":"mptcp: close race between scheduler and state change","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: close race between scheduler and state change\n\nThe mptcp scheduler may race with subflow sockets state change: data\ntransmission on the selected socket may fail and a later release could\ntry to use mss_now reset to 0 for a divide operation.\n\nAddress the issue by explicitly checking for the critical scenario.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"fb9c73ef2ac2ec816efdc8b9267bc04e1369c20b","lessThan":"d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03","status":"affected","versionType":"git"},{"version":"c886d70286bf3ad411eb3d689328a67f7102c6ae","lessThan":"5883ae880f51edc4b1484e787473b865b6159ead","status":"affected","versionType":"git"},{"version":"c886d70286bf3ad411eb3d689328a67f7102c6ae","lessThan":"0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0","status":"affected","versionType":"git"},{"version":"c886d70286bf3ad411eb3d689328a67f7102c6ae","lessThan":"8f11430d51ff8365bc51b670bc3002b65ae4c6b7","status":"affected","versionType":"git"},{"version":"c886d70286bf3ad411eb3d689328a67f7102c6ae","lessThan":"a09c87abf10a0a7e203137c75b5381aa63d9b31d","status":"affected","versionType":"git"},{"version":"c886d70286bf3ad411eb3d689328a67f7102c6ae","lessThan":"4c856f3c151a2f3fa237caa651c44015916ca584","status":"affected","versionType":"git"},{"version":"c886d70286bf3ad411eb3d689328a67f7102c6ae","lessThan":"42064de57fb83231fcc89663a94885f228a1ee53","status":"affected","versionType":"git"},{"version":"8caf5c15b5288d52d9c89374d6c10fa32ee84ec5","status":"affected","versionType":"git"},{"version":"5.15.190","lessThan":"5.15.222","status":"affected","versionType":"semver"},{"version":"5.19.4","lessThan":"5.20","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.0","status":"affected"},{"version":"0","lessThan":"6.0","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","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-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5883ae880f51edc4b1484e787473b865b6159ead","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"8f11430d51ff8365bc51b670bc3002b65ae4c6b7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"4c856f3c151a2f3fa237caa651c44015916ca584","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"42064de57fb83231fcc89663a94885f228a1ee53","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.15.222","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","source_modified_at":"2026-10-19T09:08:41.355Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.20","basis":"first unaffected version stated in the CVE record"}],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.0067,"percentile":0.51426,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:21:27.042Z","modified_at":"2026-10-19T09:08:41.355Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97523","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:08:41.355Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97523","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/d74b2e26b54a7dae1d87c1f19ae0d6db500e5e03"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5883ae880f51edc4b1484e787473b865b6159ead"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/0a926b5df8efdfbac07e2fb7fafb21849a2ad9c0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/8f11430d51ff8365bc51b670bc3002b65ae4c6b7"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a09c87abf10a0a7e203137c75b5381aa63d9b31d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4c856f3c151a2f3fa237caa651c44015916ca584"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/42064de57fb83231fcc89663a94885f228a1ee53"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:08:41.355Z","content_hash":"7b42cf25b3c792be80235699879ff87cbc62b63d8eb1aafdc423d0b68904cfc8"}}