{"api_version":"1","generated_at":"2026-10-27T16:46:41+00:00","cve":"CVE-2026-98846","urls":{"html":"https://cve.report/CVE-2026-98846","api":"https://cve.report/api/cve/CVE-2026-98846.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98846","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98846"},"summary":{"title":"sctp: check RCV_SHUTDOWN after the sendmsg connect wait","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:38","updated_at":"2026-10-21 13:21:49"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669","name":"https://git.kernel.org/stable/c/222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e701345d886e831fb593a0870d69c8c5de6fc938","name":"https://git.kernel.org/stable/c/e701345d886e831fb593a0870d69c8c5de6fc938","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e8f972b1759d26bbefe4c524caae1ed7c8a593bd","name":"https://git.kernel.org/stable/c/e8f972b1759d26bbefe4c524caae1ed7c8a593bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4f1da630d13de0370e2f6361f961f1c8b384af1c","name":"https://git.kernel.org/stable/c/4f1da630d13de0370e2f6361f961f1c8b384af1c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/1bef1944ef15a40797305bf916827b04df6307ca","name":"https://git.kernel.org/stable/c/1bef1944ef15a40797305bf916827b04df6307ca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98846","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98846","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 668c9beb9020d5834ee9e43c208190a07d2b1928 1bef1944ef15a40797305bf916827b04df6307ca git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 668c9beb9020d5834ee9e43c208190a07d2b1928 e8f972b1759d26bbefe4c524caae1ed7c8a593bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 668c9beb9020d5834ee9e43c208190a07d2b1928 e701345d886e831fb593a0870d69c8c5de6fc938 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 668c9beb9020d5834ee9e43c208190a07d2b1928 222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 668c9beb9020d5834ee9e43c208190a07d2b1928 4f1da630d13de0370e2f6361f961f1c8b384af1c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.113 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.56 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.10 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"98846","cve":"CVE-2026-98846","epss":"0.001560000","percentile":"0.043910000","score_date":"2026-10-21","updated_at":"2026-10-22 00:15:10"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/sctp/socket.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"1bef1944ef15a40797305bf916827b04df6307ca","status":"affected","version":"668c9beb9020d5834ee9e43c208190a07d2b1928","versionType":"git"},{"lessThan":"e8f972b1759d26bbefe4c524caae1ed7c8a593bd","status":"affected","version":"668c9beb9020d5834ee9e43c208190a07d2b1928","versionType":"git"},{"lessThan":"e701345d886e831fb593a0870d69c8c5de6fc938","status":"affected","version":"668c9beb9020d5834ee9e43c208190a07d2b1928","versionType":"git"},{"lessThan":"222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669","status":"affected","version":"668c9beb9020d5834ee9e43c208190a07d2b1928","versionType":"git"},{"lessThan":"4f1da630d13de0370e2f6361f961f1c8b384af1c","status":"affected","version":"668c9beb9020d5834ee9e43c208190a07d2b1928","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/sctp/socket.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.16"},{"lessThan":"4.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.113","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.56","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"4.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.113","versionStartIncluding":"4.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.56","versionStartIncluding":"4.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.10","versionStartIncluding":"4.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"4.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-10-21T12:57:26.471Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1bef1944ef15a40797305bf916827b04df6307ca"},{"url":"https://git.kernel.org/stable/c/e8f972b1759d26bbefe4c524caae1ed7c8a593bd"},{"url":"https://git.kernel.org/stable/c/e701345d886e831fb593a0870d69c8c5de6fc938"},{"url":"https://git.kernel.org/stable/c/222c41e0f50f1d5028be9baf0e1dcfc0bfa7f669"},{"url":"https://git.kernel.org/stable/c/4f1da630d13de0370e2f6361f961f1c8b384af1c"}],"title":"sctp: check RCV_SHUTDOWN after the sendmsg connect wait","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98846","datePublished":"2026-10-18T15:50:34.714Z","dateReserved":"2026-09-25T10:25:14.373Z","dateUpdated":"2026-10-21T12:57:26.471Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:38","lastModifiedDate":"2026-10-21 13:21:49","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98846","Ordinal":"1","Title":"sctp: check RCV_SHUTDOWN after the sendmsg connect wait","CVE":"CVE-2026-98846","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98846","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"sctp: check RCV_SHUTDOWN after the sendmsg connect wait"}]}}}