{"id":"CVE-2026-98559","summary":"net/smc: fix UAF on lgr list traversal in smcr_port_err()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix UAF on lgr list traversal in smcr_port_err()\n\nsmcr_port_err() traverses smc_lgr_list.list without holding\nsmc_lgr_list.lock, allowing a concurrent smc_lgr_terminate_sched()\nto free an lgr while it is still being dereferenced.\n\nHold smc_lgr_list.lock across the traversal. Update\nsmc_ib_gid_check() to call smcr_port_err() after releasing the lock.","modified":"2026-10-19T02:46:36.143846630Z","published":"2026-10-18T15:18:26.349Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98559.json"},"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/00a59600ae72d24859d0ad1783a78bc921bc2599"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0edcc4284392b28826b5d37532b366b291e6e0fa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/34bcf11cd2528ae00bb6d764d808083c66824277"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d35f069e1c119992000d51236dbe54da2d4e61e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d65a2eb4449fc9658fb860dea893025d028d90e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/61cb282fe97b3b0ba32ca09417a693162bf4ae3f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9b968e42690d784c241a0761c10253271f7df5d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98559.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98559"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"541afa10c126b6c22c2a805a559c70cc41fd156e"},{"fixed":"34bcf11cd2528ae00bb6d764d808083c66824277"},{"fixed":"0edcc4284392b28826b5d37532b366b291e6e0fa"},{"fixed":"00a59600ae72d24859d0ad1783a78bc921bc2599"},{"fixed":"3d35f069e1c119992000d51236dbe54da2d4e61e"},{"fixed":"3d65a2eb4449fc9658fb860dea893025d028d90e"},{"fixed":"a9b968e42690d784c241a0761c10253271f7df5d"},{"fixed":"61cb282fe97b3b0ba32ca09417a693162bf4ae3f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98559.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.8.0"},{"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-2026-98559.json"}}],"schema_version":"1.9.0"}