{"schema":"threatline.record/2","record":{"id":"CVE-2026-98846","aliases":[],"summary":"sctp: check RCV_SHUTDOWN after the sendmsg connect wait","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: check RCV_SHUTDOWN after the sendmsg connect wait\n\nsctp_wait_for_connect() drops the socket lock while it sleeps. An\nout-of-the-blue ABORT can then be processed from the socket backlog and\nunlink the association. If a concurrent shutdown(fd, SHUT_RD) sets\nRCV_SHUTDOWN, the waiter breaks with err == 0 before checking\nasoc->base.dead. Its final sctp_association_put() can then free the\nassociation, leaving sctp_sendmsg_to_asoc() to continue with a dangling\npointer.\n\nCheck RCV_SHUTDOWN along with the wait error in sctp_sendmsg_to_asoc()\nbefore using the association again. The check only accesses the socket,\nso it needs no additional association reference. Return the existing\n-ESRCH so that sctp_sendmsg() skips freeing a new association that may\nalready have been destroyed.\n\nKeep sctp_wait_for_connect() unchanged to preserve its behavior for the\nconnect() caller.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98846","source_modified_at":"2026-10-21T12:57:26.471Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"668c9beb9020d5834ee9e43c208190a07d2b1928","lessThan":"1bef1944ef15a40797305bf916827b04df6307ca","status":"affected","versionType":"git"},{"version":"668c9beb9020d5834ee9e43c208190a07d2b1928","lessThan":"e8f972b1759d26bbefe4c524caae1ed7c8a593bd","status":"affected","versionType":"git"},{"version":"668c9beb9020d5834ee9e43c208190a07d2b1928","lessThan":"e701345d886e831fb593a0870d69c8c5de6fc938","status":"affected","versionType":"git"},{"version":"668c9beb9020d5834ee9e43c208190a07d2b1928","lessThan":"222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669","status":"affected","versionType":"git"},{"version":"668c9beb9020d5834ee9e43c208190a07d2b1928","lessThan":"4f1da630d13de0370e2f6361f961f1c8b384af1c","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98846","source_modified_at":"2026-10-21T12:57:26.471Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"4.16","status":"affected"},{"version":"0","lessThan":"4.16","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":"6.18.56","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","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-2026-98846","source_modified_at":"2026-10-21T12:57:26.471Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"1bef1944ef15a40797305bf916827b04df6307ca","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98846","source_modified_at":"2026-10-21T12:57:26.471Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98846","source_modified_at":"2026-10-21T12:57:26.471Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"4f1da630d13de0370e2f6361f961f1c8b384af1c","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00156,"percentile":0.04399,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:50:34.714Z","modified_at":"2026-10-21T12:57:26.471Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98846","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:57:26.471Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98846","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/1bef1944ef15a40797305bf916827b04df6307ca"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e8f972b1759d26bbefe4c524caae1ed7c8a593bd"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e701345d886e831fb593a0870d69c8c5de6fc938"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/4f1da630d13de0370e2f6361f961f1c8b384af1c"}],"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":"2026-10-21T12:57:26.471Z","content_hash":"5048f9af4c703c5b1c3b6b1317fefc10734cafb9fc9a58c454c4f8f71026d070"}}