{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99241","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.403Z","datePublished":"2026-11-02T16:06:44.163Z","dateUpdated":"2026-11-02T16:06:44.163Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-11-02T16:06:44.163Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: take invalidate_lock in ntfs_filemap_page_mkwrite()\n\nntfs_filemap_page_mkwrite() calls iomap_page_mkwrite() without holding\nmapping->invalidate_lock, so a concurrent truncate or fallocate can be\nin the middle of invalidating pagecache and rewriting the runlist while\nthe write fault maps blocks and dirties the folio.  This races with\nntfs_attr_fallocate(), which merges clusters into the in-memory\nrunlist, drops the runlist lock, and only afterwards zeroes the newly\nallocated clusters on disk; and with the punch-hole/insert/collapse\npaths that free clusters after truncating the cache.\n\nPer Documentation/filesystems/locking.rst, ->page_mkwrite() must ensure\nthere are no truncate/invalidate races, \"usually mapping->invalidate_lock\nis suitable for proper serialization\".  xfs takes its mmaplock (= the\ninvalidate_lock rwsem) shared in exactly this path.\n\nTake invalidate_lock shared around iomap_page_mkwrite().  The read-only\nfault path is already covered because filemap_fault() itself grabs\ninvalidate_lock shared on instantiation/read paths; only page_mkwrite\nwas bypassing it in this driver."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/ntfs/file.c"],"versions":[{"version":"9c87959601e80b39a45250e362e6ddfec17cb0fa","lessThan":"57c0d5281666d150c73e56e6795a4eef3ede8693","status":"affected","versionType":"git"},{"version":"9c87959601e80b39a45250e362e6ddfec17cb0fa","lessThan":"0fecc393f2060e6bc25138df32cb923ec7071c6b","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/ntfs/file.c"],"versions":[{"version":"7.1","status":"affected"},{"version":"0","lessThan":"7.1","status":"unaffected","versionType":"semver"},{"version":"7.2.14","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":"7.1","versionEndExcluding":"7.2.14"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.1","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/57c0d5281666d150c73e56e6795a4eef3ede8693"},{"url":"https://git.kernel.org/stable/c/0fecc393f2060e6bc25138df32cb923ec7071c6b"}],"title":"ntfs: take invalidate_lock in ntfs_filemap_page_mkwrite()","x_generator":{"engine":"bippy-1.2.0"}}}}