{"id":"CVE-2026-80958","revision":"1c0c682027014aaf8d4b6fc853798de0","records":[{"revision":"1c0c682027014aaf8d4b6fc853798de0","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-80958","aliases":[],"title":"dm-pcache: clamp the tail kset read to the segment data region","description":"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.","state":0,"publishedAt":"2026-09-11T19:42:25.861+00:00","modifiedAt":"2026-10-19T08:45:42.221+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_gc.c\",\n                        \"drivers/md/dm-pcache/cache_key.c\",\n                        \"drivers/md/dm-pcache/cache_writeback.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0\",\n                            \"lessThan\": \"2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0\",\n                            \"lessThan\": \"1ab55354368d071ebaee4d8c82313955eab65a04\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0\",\n                            \"lessThan\": \"becf07e2b0053027495ecd671b1f82fb2e615f68\",\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_gc.c\",\n                        \"drivers/md/dm-pcache/cache_key.c\",\n                        \"drivers/md/dm-pcache/cache_writeback.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:N/A:H","score":7.1,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/2cd9776fe3f2d88ec22c36d3c8ba09fbf9d5500c","https://git.kernel.org/stable/c/1ab55354368d071ebaee4d8c82313955eab65a04","https://git.kernel.org/stable/c/becf07e2b0053027495ecd671b1f82fb2e615f68"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80958","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-80958","identifiers":["CVE-2026-80958"]},"retained":false,"historicalAffected":[]}],"coverage":[]}