{"schema":"threatline.record/2","record":{"id":"CVE-2026-98686","aliases":[],"summary":"smb: client: discard post-EOF pagecache when extending a file via zero range","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: discard post-EOF pagecache when extending a file via zero range\n\nsmb3_zero_range() removed the pagecache only for the range being zeroed,\nso when it extends the file the folio straddling the old EOF - which may\nhold data dirtied past EOF through an mmap - was never dropped and became\nvisible as file content once the file was extended.\n\nLower the discard boundary to the smaller of the zero-range offset and the\nold EOF.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98686","source_modified_at":"2026-10-21T12:55:41.290Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"72c419d9b073628d3b5b0b2fc787b724f1a8c726","lessThan":"3df27277f8f95345d4a6c57367824bf1aefdbf66","status":"affected","versionType":"git"},{"version":"72c419d9b073628d3b5b0b2fc787b724f1a8c726","lessThan":"94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183","status":"affected","versionType":"git"},{"version":"72c419d9b073628d3b5b0b2fc787b724f1a8c726","lessThan":"b75dadb50a25eed525264bf6fea44fad94e7626f","status":"affected","versionType":"git"},{"version":"72c419d9b073628d3b5b0b2fc787b724f1a8c726","lessThan":"6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d","status":"affected","versionType":"git"},{"version":"72c419d9b073628d3b5b0b2fc787b724f1a8c726","lessThan":"da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98686","source_modified_at":"2026-10-21T12:55:41.290Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.1","status":"affected"},{"version":"0","lessThan":"5.1","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.56","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-2026-98686","source_modified_at":"2026-10-21T12:55:41.290Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"3df27277f8f95345d4a6c57367824bf1aefdbf66","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98686","source_modified_at":"2026-10-21T12:55:41.290Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98686","source_modified_at":"2026-10-21T12:55:41.290Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05714,"score_date":"2026-10-23"},"published_at":"2026-10-18T15:45:55.193Z","modified_at":"2026-10-21T12:55:41.290Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98686","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:55:41.290Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98686","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/3df27277f8f95345d4a6c57367824bf1aefdbf66"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b75dadb50a25eed525264bf6fea44fad94e7626f"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0"}],"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":"2026-10-21T12:55:41.290Z","content_hash":"6d8f00b373765c29de820ff523836470ee63c8df18a6ab8c80e7d866256cae89"}}