netfs: Fix partial invalidation of streaming-write folio

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Summary

CVECVE-2026-64157
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:57 UTC
Updated2026-07-19 16:17:57 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfs: Fix partial invalidation of streaming-write folio In netfs_invalidate_folio(), if the region of a partial invalidation overlaps the front (but not all) of a dirty write cached in a streaming write page (dirty, but not uptodate, with the dirty region tracked by a netfs_folio struct), the function modifies the dirty region - but incorrectly as it moves the region forward by setting the start to the start, not the end, of the invalidation region. Fix this by setting finfo->dirty_offset to the end of the invalidation region (iend).

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected cce6bfa6ca0e30af9927b0074c97fe6a92f28092 f6b2569ae29b666fd15ff2848684c445ba442a39 git Not specified
CNA Linux Linux affected cce6bfa6ca0e30af9927b0074c97fe6a92f28092 3d9601c029b934b5b6a10f99791467b10eb6b211 git Not specified
CNA Linux Linux affected cce6bfa6ca0e30af9927b0074c97fe6a92f28092 6a3d27116be2c5fb9a03d5cf37c486ac517f3689 git Not specified
CNA Linux Linux affected cce6bfa6ca0e30af9927b0074c97fe6a92f28092 6d91acc7fb85d33ea58fca9b964a32a453937f4b git Not specified
CNA Linux Linux affected e2814004138a541110d4b2dc254a8f619c2c4ce0 git Not specified
CNA Linux Linux affected 6.10.8 6.11 semver Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 6.12.92 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f6b2569ae29b666fd15ff2848684c445ba442a39 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6d91acc7fb85d33ea58fca9b964a32a453937f4b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3d9601c029b934b5b6a10f99791467b10eb6b211 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6a3d27116be2c5fb9a03d5cf37c486ac517f3689 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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