{"id":"CVE-2026-98614","summary":"sctp: avoid livelock while updating retransmit path","details":"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.","modified":"2026-10-20T02:31:08.455028462Z","published":"2026-10-18T15:19:34.494Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98614.json","cna_assigner":"Linux"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/173610fff55022a5ad1579fbcc7faa97467b58b7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3fe624c3843694ab096fdb198526ba0c659febbe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/43410c1f2db53516e95ddd7e5b4b02f495b78121"},{"type":"WEB","url":"https://git.kernel.org/stable/c/83b1a7f9e718828ef364a7b004254ebb2d0035fe"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c9338057df1025f578fe7d0ff08bada87b8b838d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d2c31b837406395e576afeb25958c98e9938f3f6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ddc34cc0834c873871e88b055ee6a260676efe97"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98614.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98614"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"4c47af4d5eb2c2f78f886079a3920a7078a6f0a0"},{"fixed":"3fe624c3843694ab096fdb198526ba0c659febbe"},{"fixed":"43410c1f2db53516e95ddd7e5b4b02f495b78121"},{"fixed":"d893a7cc1cb41dd510f338bb2bfd8f29b14eaf49"},{"fixed":"83b1a7f9e718828ef364a7b004254ebb2d0035fe"},{"fixed":"173610fff55022a5ad1579fbcc7faa97467b58b7"},{"fixed":"c9338057df1025f578fe7d0ff08bada87b8b838d"},{"fixed":"ddc34cc0834c873871e88b055ee6a260676efe97"},{"fixed":"d2c31b837406395e576afeb25958c98e9938f3f6"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3.10.106"},{"fixed":"3.11"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"3.12.71"},{"fixed":"3.13"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"8ceaec02b17397d12719a282945abc95f8149d9f"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d2c2bdcdd8c5ce3d2a68aa3353ed1f340c3e500e"}]}],"versions":["v3.10.108","v3.10.107","v3.10.106","v3.12.74","v3.12.73","v3.12.72","v3.12.71"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98614.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.14.0"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.112"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.55"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98614.json"}}],"schema_version":"1.9.0"}