netfs: Fix potential for tearing in ->remote_i_size and ->zero_point

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Summary

CVECVE-2026-64160
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-19 16:17:58 UTC
Updated2026-07-19 16:17:58 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: netfs: Fix potential for tearing in ->remote_i_size and ->zero_point Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 55970f238d495517edc961d55c44c772594d0969 git Not specified
CNA Linux Linux affected 4058f742105ecfcbdf99e1139e6c1f74fb8e6db9 2c8f4742bb76117d735f92a3932d85239b16c494 git Not specified
CNA Linux Linux affected 5.18 Not specified
CNA Linux Linux unaffected 5.18 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/55970f238d495517edc961d55c44c772594d0969 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2c8f4742bb76117d735f92a3932d85239b16c494 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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