{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98686","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.364Z","datePublished":"2026-10-18T15:45:55.193Z","dateUpdated":"2026-10-21T12:55:41.290Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-21T12:55:41.290Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/smb2ops.c"],"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"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/smb/client/smb2ops.c"],"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"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.1","versionEndExcluding":"7.3"}]}]}],"references":[{"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"}}}}