{"schema":"threatline.record/2","record":{"id":"CVE-2026-98868","aliases":[],"summary":"dm-pcache: reject a kset that overruns its segment","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: reject a kset that overruns its segment\n\ncache_replay(), the writeback worker and the GC worker read a kset of\nget_kset_onmedia_size() bytes and advance the position by it. A forged\nkey_num makes that size exceed the segment's remaining space, so the\nadvance walks past the segment and trips the cache_pos_advance() BUG_ON.\n\nReject a kset whose on-media size exceeds cache_seg_remain() before use.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98868","source_modified_at":"2026-10-19T09:27:02.926Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0","lessThan":"01a700e9278da5706c865b9ca3ae70fdb7b4531d","status":"affected","versionType":"git"},{"version":"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0","lessThan":"96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10","status":"affected","versionType":"git"},{"version":"1d57628ff95b32d5cfa8d8f50e07690c161e9cf0","lessThan":"7ac1f10f987a2ffae4aecf0e2ceca8f552b665cb","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98868","source_modified_at":"2026-10-19T09:27:02.926Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.18","status":"affected"},{"version":"0","lessThan":"6.18","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.10","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98868","source_modified_at":"2026-10-19T09:27:02.926Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"01a700e9278da5706c865b9ca3ae70fdb7b4531d","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98868","source_modified_at":"2026-10-19T09:27:02.926Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98868","source_modified_at":"2026-10-19T09:27:02.926Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"7ac1f10f987a2ffae4aecf0e2ceca8f552b665cb","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00169,"percentile":0.0594,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:51:30.658Z","modified_at":"2026-10-19T09:27:02.926Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98868","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:27:02.926Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98868","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/01a700e9278da5706c865b9ca3ae70fdb7b4531d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/96e2863b1f81ea61b8d8d5d5a45d3b4c018f8e10"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/7ac1f10f987a2ffae4aecf0e2ceca8f552b665cb"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:27:02.926Z","content_hash":"e3de51ed56b2858ed4b101ad8e0a1fd10ac919ec0842a2deba3dbd6d0793180e"}}