{"schema":"threatline.record/2","record":{"id":"CVE-2026-97524","aliases":[],"summary":"mptcp: avoid unneeded actions on subflow reset","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: avoid unneeded actions on subflow reset\n\nOnce in a blue moon, the mptcp receive path can recursively call\nmptcp_data_ready() via state change under unlucky error conditions, and\nthen try to hold the data lock again.\n\nBreak the recursion loop explicitly checking for the exceptional\ncondition.\n\nAdd a new flag instead of using an existing one like 'closing', to exit\nearly in subflow_state_change(), and explicitly flush the RX queue at\nreset time.\n\nThis avoids unneeded processing to check for available data -- calling\nget_mapping_status() and more on a dying subflow -- but also in error\nreporting and worker scheduling.\n\nNote that we must consume the currently peeked skb before invoking\nmptcp_dss_corruption to avoid consuming it again after the eventual\nreset has freed it.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"fde99e972b8f88cebe619241d7aa43d288ef666a","lessThan":"6d669c740933124eae3df8cfc15995af9bcc6aba","status":"affected","versionType":"git"},{"version":"12c1676d598e3b8dd92a033b623b792cc2ea1ec5","lessThan":"83a7dcdd2b1060484528da70a643125174d47e5a","status":"affected","versionType":"git"},{"version":"35668f8ec84f6c944676e48ecc6bbc5fc8e6fe25","lessThan":"a370e56024df0b07e3120c45a9773ae123819fd6","status":"affected","versionType":"git"},{"version":"b8be15d1ae7ea4eedd547c3b3141f592fbddcd30","lessThan":"1962841387087970d75ba8b8d4c2aa2d45705e50","status":"affected","versionType":"git"},{"version":"e32d262c89e2b22cb0640223f953b548617ed8a6","lessThan":"4b7abdcb5ba832fafab679f0d998af39cbc99307","status":"affected","versionType":"git"},{"version":"e32d262c89e2b22cb0640223f953b548617ed8a6","lessThan":"b2dbcc1ed48b5ac070a41db4a52aade6823c4df0","status":"affected","versionType":"git"},{"version":"e32d262c89e2b22cb0640223f953b548617ed8a6","lessThan":"ce7e4ede01ed3e47a48c0f1ce1d87bf4864bee9f","status":"affected","versionType":"git"},{"version":"e32d262c89e2b22cb0640223f953b548617ed8a6","lessThan":"2b0f561f21b27c40c91ea4975268a06092bd7e9c","status":"affected","versionType":"git"},{"version":"8bfd391bde685df7289b928ce8876a3583be4bfb","status":"affected","versionType":"git"},{"version":"5.10.228","lessThan":"5.10.271","status":"affected","versionType":"semver"},{"version":"5.15.169","lessThan":"5.15.222","status":"affected","versionType":"semver"},{"version":"6.1.113","lessThan":"6.1.189","status":"affected","versionType":"semver"},{"version":"6.6.57","lessThan":"6.6.158","status":"affected","versionType":"semver"},{"version":"6.11.4","lessThan":"6.12","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.12","status":"affected"},{"version":"0","lessThan":"6.12","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","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-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6d669c740933124eae3df8cfc15995af9bcc6aba","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"83a7dcdd2b1060484528da70a643125174d47e5a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1962841387087970d75ba8b8d4c2aa2d45705e50","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"4b7abdcb5ba832fafab679f0d998af39cbc99307","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"2b0f561f21b27c40c91ea4975268a06092bd7e9c","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97524","source_modified_at":"2026-10-19T09:08:42.302Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"5.10.271","basis":"first unaffected version stated in the CVE record"},{"source":"CVE 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List","url":"https://git.kernel.org/stable/c/83a7dcdd2b1060484528da70a643125174d47e5a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/a370e56024df0b07e3120c45a9773ae123819fd6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1962841387087970d75ba8b8d4c2aa2d45705e50"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4b7abdcb5ba832fafab679f0d998af39cbc99307"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b2dbcc1ed48b5ac070a41db4a52aade6823c4df0"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/ce7e4ede01ed3e47a48c0f1ce1d87bf4864bee9f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/2b0f561f21b27c40c91ea4975268a06092bd7e9c"}],"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":"2026-10-19T09:08:42.302Z","content_hash":"824998c910f88771a09dc8802eae0a110e3df55da6f7d720a82b7ff4cc87c914"}}