{"id":"CVE-2026-80959","revision":"4aba08d86a3e440a86dd1782025a8b52","records":[{"revision":"4aba08d86a3e440a86dd1782025a8b52","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80959","aliases":[],"title":"dm-pcache: bound the persisted tail-position offset","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: bound the persisted tail-position offset\n\ncache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from\nthe cache device and addresses within the segment with it. A seg_off at or\npast the segment data_size, controllable by whoever supplies the device\n(CAP_SYS_ADMIN), reads past the segment data.\n\nReject a decoded seg_off that is not below the segment data_size.","state":0,"publishedAt":"2026-09-11T19:42:26.514+00:00","modifiedAt":"2026-10-19T08:45:43.213+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/md/dm-pcache/cache.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0\",\n                            \"lessThan\": \"ffd9a214a94f9928e54856f42b1cc3e33fb10e36\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0\",\n                            \"lessThan\": \"8bf7a06ca3c1611809725f58cfd573f2ffbda75f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0\",\n                            \"lessThan\": \"d1898576090a10d2ac2715218a652e78fb65a6b0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/md/dm-pcache/cache.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36","https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f","https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80959","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80959","identifiers":["CVE-2026-80959"]},"retained":false,"historicalAffected":[]}],"coverage":[]}