{"id":"CVE-2026-98614","state":"PUBLISHED","title":"sctp: avoid livelock while updating retransmit path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid livelock while updating retransmit path\n\nsctp_assoc_update_retran_path() can loop forever when every remaining\ntransport, including retran_path, is SCTP_UNCONFIRMED: the state check\nruns before the wraparound test, so the loop cannot observe that it has\ncompleted a full pass.\n\nFix this by considering a transport only when it is not UNCONFIRMED,\nthen checking whether the walk has returned to retran_path. This makes\nthe full-pass termination independent of the transport state while\npreserving the existing fallback selection semantics.\n\nAlso restore the NULL guard around the retran_path assignment. In the\nall-UNCONFIRMED case there is no eligible replacement transport, and\ninstalling NULL would leave later retransmit-path users and the debug\nprint with a NULL path.","publishedAt":"2026-10-18T15:19:34.494Z","updatedAt":"2026-10-19T09:22:42.185Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"3fe624c3843694ab096fdb198526ba0c659febbe","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"43410c1f2db53516e95ddd7e5b4b02f495b78121","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"83b1a7f9e718828ef364a7b004254ebb2d0035fe","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"173610fff55022a5ad1579fbcc7faa97467b58b7","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"c9338057df1025f578fe7d0ff08bada87b8b838d","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"ddc34cc0834c873871e88b055ee6a260676efe97","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"d2c31b837406395e576afeb25958c98e9938f3f6","versionType":"git"},{"version":"8ceaec02b17397d12719a282945abc95f8149d9f","status":"affected","versionType":"git"},{"version":"d2c2bdcdd8c5ce3d2a68aa3353ed1f340c3e500e","status":"affected","versionType":"git"},{"version":"3.10.106","status":"affected","lessThan":"3.11","versionType":"semver"},{"version":"3.12.71","status":"affected","lessThan":"3.13","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sctp/associola.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.14","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sctp/associola.c"]}],"references":["https://git.kernel.org/stable/c/3fe624c3843694ab096fdb198526ba0c659febbe","https://git.kernel.org/stable/c/43410c1f2db53516e95ddd7e5b4b02f495b78121","https://git.kernel.org/stable/c/d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49","https://git.kernel.org/stable/c/83b1a7f9e718828ef364a7b004254ebb2d0035fe","https://git.kernel.org/stable/c/173610fff55022a5ad1579fbcc7faa97467b58b7","https://git.kernel.org/stable/c/c9338057df1025f578fe7d0ff08bada87b8b838d","https://git.kernel.org/stable/c/ddc34cc0834c873871e88b055ee6a260676efe97","https://git.kernel.org/stable/c/d2c31b837406395e576afeb25958c98e9938f3f6"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98614.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98614","state":"PUBLISHED","datePublished":"2026-10-18T15:19:34.494Z","dateUpdated":"2026-10-19T09:22:42.185Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.360Z"},"containers":{"cna":{"title":"sctp: avoid livelock while updating retransmit path","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: avoid livelock while updating retransmit path\n\nsctp_assoc_update_retran_path() can loop forever when every remaining\ntransport, including retran_path, is SCTP_UNCONFIRMED: the state check\nruns before the wraparound test, so the loop cannot observe that it has\ncompleted a full pass.\n\nFix this by considering a transport only when it is not UNCONFIRMED,\nthen checking whether the walk has returned to retran_path. This makes\nthe full-pass termination independent of the transport state while\npreserving the existing fallback selection semantics.\n\nAlso restore the NULL guard around the retran_path assignment. In the\nall-UNCONFIRMED case there is no eligible replacement transport, and\ninstalling NULL would leave later retransmit-path users and the debug\nprint with a NULL path."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"3fe624c3843694ab096fdb198526ba0c659febbe","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"43410c1f2db53516e95ddd7e5b4b02f495b78121","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"83b1a7f9e718828ef364a7b004254ebb2d0035fe","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"173610fff55022a5ad1579fbcc7faa97467b58b7","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"c9338057df1025f578fe7d0ff08bada87b8b838d","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"ddc34cc0834c873871e88b055ee6a260676efe97","versionType":"git"},{"version":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0","status":"affected","lessThan":"d2c31b837406395e576afeb25958c98e9938f3f6","versionType":"git"},{"version":"8ceaec02b17397d12719a282945abc95f8149d9f","status":"affected","versionType":"git"},{"version":"d2c2bdcdd8c5ce3d2a68aa3353ed1f340c3e500e","status":"affected","versionType":"git"},{"version":"3.10.106","status":"affected","lessThan":"3.11","versionType":"semver"},{"version":"3.12.71","status":"affected","lessThan":"3.13","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sctp/associola.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"3.14","status":"affected"},{"version":"0","status":"unaffected","lessThan":"3.14","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sctp/associola.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3fe624c3843694ab096fdb198526ba0c659febbe"},{"url":"https://git.kernel.org/stable/c/43410c1f2db53516e95ddd7e5b4b02f495b78121"},{"url":"https://git.kernel.org/stable/c/d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49"},{"url":"https://git.kernel.org/stable/c/83b1a7f9e718828ef364a7b004254ebb2d0035fe"},{"url":"https://git.kernel.org/stable/c/173610fff55022a5ad1579fbcc7faa97467b58b7"},{"url":"https://git.kernel.org/stable/c/c9338057df1025f578fe7d0ff08bada87b8b838d"},{"url":"https://git.kernel.org/stable/c/ddc34cc0834c873871e88b055ee6a260676efe97"},{"url":"https://git.kernel.org/stable/c/d2c31b837406395e576afeb25958c98e9938f3f6"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T09:22:42.185Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.14","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.10.106"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:li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