{"api_version":"1","generated_at":"2026-11-11T14:33:11+00:00","cve":"CVE-2026-98686","urls":{"html":"https://cve.report/CVE-2026-98686","api":"https://cve.report/api/cve/CVE-2026-98686.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98686","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98686"},"summary":{"title":"smb: client: discard post-EOF pagecache when extending a file via zero range","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:21","updated_at":"2026-10-30 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Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98686","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 1ecf89d8efca618e0c758c06b9a1fdde8bd941da git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 03408d15c5405f8dc3e1a114cdce2174027a85f6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 3df27277f8f95345d4a6c57367824bf1aefdbf66 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 72c419d9b073628d3b5b0b2fc787b724f1a8c726 94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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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."}],"providerMetadata":{"dateUpdated":"2026-10-30T12:38:44.094Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/1ecf89d8efca618e0c758c06b9a1fdde8bd941da"},{"url":"https://git.kernel.org/stable/c/03408d15c5405f8dc3e1a114cdce2174027a85f6"},{"url":"https://git.kernel.org/stable/c/3df27277f8f95345d4a6c57367824bf1aefdbf66"},{"url":"https://git.kernel.org/stable/c/94949b6b2f2bf0dba2e8786aed0b08cc6bc3a183"},{"url":"https://git.kernel.org/stable/c/b75dadb50a25eed525264bf6fea44fad94e7626f"},{"url":"https://git.kernel.org/stable/c/6a8279c98ad289b27c0bdb11adb3f0c0b7fd456d"},{"url":"https://git.kernel.org/stable/c/da4fe97fb6c730d9c94a115c7bfa6f98e0d578d0"}],"title":"smb: client: discard post-EOF pagecache when extending a file via zero range","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98686","datePublished":"2026-10-18T15:45:55.193Z","dateReserved":"2026-09-25T10:25:14.364Z","dateUpdated":"2026-10-30T12:38:44.094Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:21","lastModifiedDate":"2026-10-30 13:21:18","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98686","Ordinal":"1","Title":"smb: client: discard post-EOF pagecache when extending a file vi","CVE":"CVE-2026-98686","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98686","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"smb: client: discard post-EOF pagecache when extending a file vi"}]}}}