{"id":"CVE-2026-80962","title":"kernel: dm-pcache: validate geometry fields from on-disk cache_info (CVE-2026-80962)","summary":"A flaw was found in the Linux kernel's dm-pcache component. A local attacker with administrative privileges (CAP_SYS_ADMIN) could manipulate on-disk cache metadata to provide invalid geometry fields. This manipulation could lead to an out-…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":"CWE-125","vendor":"Red Hat","product":"Red Hat OpenShift Container Platform 4","affected":["openshift_container_platform 4"],"published":"2026-09-11","updated":"2026-09-14","sourceUpdated":"2026-09-14T17:36:34+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80962.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80962.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80962"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532323"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80962"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80962"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80962.mbox"},{"url":"https://git.kernel.org/stable/c/32d1809da31094ef76fd98dc1f1a8b55ca1295dd"},{"url":"https://git.kernel.org/stable/c/3e19172089ec81132a8a48e802b1034a744209f4"},{"url":"https://git.kernel.org/stable/c/ab5dcde6fa96bc115b85f3621c60e39c66229a90"}],"tags":["csaf","vex","red-hat","cve.org"],"epss":0.00161,"epssPercentile":0.05762,"scores":{"vendor":6,"cna":7.8},"ingestedAt":"2026-09-14T15:23:07.476Z","slug":"CVE-2026-80962","body":"## Overview\n\nA flaw was found in the Linux kernel's dm-pcache component. A local attacker with administrative privileges (CAP_SYS_ADMIN) could manipulate on-disk cache metadata to provide invalid geometry fields. This manipulation could lead to an out-of-bounds read and write, potentially causing memory corruption and impacting system stability.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80962.json)\n\n**kernel: dm-pcache: validate geometry fields from on-disk cache_info** — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-14.\n\nNot affected:\n\n- Red Hat Enterprise Linux 10\n- Red Hat Enterprise Linux 6\n- Red Hat Enterprise Linux 7\n- Red Hat Enterprise Linux 8\n- Red Hat Enterprise Linux 9\n- Red Hat OpenShift Container Platform 4\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204232,"id":"CVE-2026-80962","ts":1789490240430,"field":"cvss","old":"6","new":"5.5"},{"seq":202931,"id":"CVE-2026-80962","ts":1789403732999,"field":"cvss","old":"7.8","new":"6"},{"seq":202930,"id":"CVE-2026-80962","ts":1789403732999,"field":"severity","old":"high","new":"medium"},{"seq":183618,"id":"CVE-2026-80962","ts":1789356676125,"field":"cvss","old":"7.8","new":"6"},{"seq":183617,"id":"CVE-2026-80962","ts":1789356676125,"field":"severity","old":"high","new":"medium"},{"seq":153148,"id":"CVE-2026-80962","ts":1789285349241,"field":"cvss","old":null,"new":"7.8"},{"seq":153147,"id":"CVE-2026-80962","ts":1789285349241,"field":"severity","old":"none","new":"high"},{"seq":147375,"id":"CVE-2026-80962","ts":1789270210657,"field":"cvss","old":null,"new":"6"},{"seq":147374,"id":"CVE-2026-80962","ts":1789270210657,"field":"severity","old":"none","new":"medium"},{"seq":109120,"id":"CVE-2026-80962","ts":1789183730380,"field":"cvss","old":null,"new":"6"},{"seq":109119,"id":"CVE-2026-80962","ts":1789183730380,"field":"severity","old":"none","new":"medium"}]}