{"id":"CVE-2026-80958","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-80958","summary":"dm-pcache: clamp the tail kset read to the segment data region","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: clamp the tail kset read to the segment data region\n\nThe tail-kset read in cache_replay(), the writeback worker and the GC\nworker bounds its length by PCACHE_SEG_SIZE - seg_off, the raw segment\nsize rather than the data region. A tail near the segment end reads past\nthe segment data into the following control area.\n\nClamp the read to cache_seg_remain(), the data region.","published":"2026-09-11T19:42:25.861Z","modified":"2026-09-14T03:45:55.149077241Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.18.50"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1ab55354368d071ebaee4d8c82313955eab65a04"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/becf07e2b0053027495ecd671b1f82fb2e615f68"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80958.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80958"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-14T03:45:55.149077241Z"}}