{"id":"CVE-2026-80957","summary":"dm-pcache: detect a cycle in the last-kset chain during replay","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: detect a cycle in the last-kset chain during replay\n\ncache_replay() follows the on-media last-kset chain by next_cache_seg_id\nwith no cond_resched(). A forged chain that points back into a segment it\nhas already visited makes the replay loop follow it forever.\n\nCap the last-kset hops at cache-\u003en_segs; a valid chain visits each segment\nat most once.","modified":"2026-09-13T03:46:53.818850971Z","published":"2026-09-11T19:42:25.194Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80957.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/16c3b3a326e70f246a605b3dc27b7f83ba4743e3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5311dfc5cd70edccd110257e3f30b2c1dcd3768d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/663ee2f3824a505b983162de44134e789f8230da"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80957.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80957"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0"},{"fixed":"663ee2f3824a505b983162de44134e789f8230da"},{"fixed":"5311dfc5cd70edccd110257e3f30b2c1dcd3768d"},{"fixed":"16c3b3a326e70f246a605b3dc27b7f83ba4743e3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80957.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.18.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-80957.json"}}],"schema_version":"1.9.0"}