{"schema":"threatline.record/2","record":{"id":"CVE-2026-98901","aliases":[],"summary":"ksmbd: fix lease break and ack state handling","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix lease break and ack state handling\n\nDo not skip valid lease states containing WRITE_CACHING when breaking\nlevel-II/read leases for writes and truncates.\n\nHandle lease break acknowledgments according to the SMB2 rule that the\nacknowledged state must be a subset of the server's break target. Apply\nthe acknowledged state directly and keep the break pending on failed ACKs.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"17699905a381621c1cee5b6528feb05acedc86a4","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"3251ea36df5eef58aa207fbee48849d89b922ea6","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"fba4653a0b4dc2f6d42600abe21fb326292f70ff","status":"affected","versionType":"git"},{"version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","lessThan":"5015191096db311759fef98769270336cd8b1324","status":"affected","versionType":"git"},{"version":"0","lessThan":"6.6.158","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.12.111","status":"affected","versionType":"semver"},{"version":"0","lessThan":"6.18.53","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"17699905a381621c1cee5b6528feb05acedc86a4","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"3251ea36df5eef58aa207fbee48849d89b922ea6","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"5015191096db311759fef98769270336cd8b1324","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.6.158","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.12.111","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","source_modified_at":"2026-10-23T11:54:11.554Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"6.18.53","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T11:54:11.554Z","modified_at":"2026-10-23T11:54:11.554Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98901","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T11:54:11.554Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/17699905a381621c1cee5b6528feb05acedc86a4"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/3251ea36df5eef58aa207fbee48849d89b922ea6"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/fba4653a0b4dc2f6d42600abe21fb326292f70ff"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/5015191096db311759fef98769270336cd8b1324"}],"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":"2026-10-23T11:54:11.554Z","content_hash":"955e7e0c4bb041829ea016c3eca54c4a8e760ed3d52e9d1a07c07055ec07caae"}}