CVE-2026-64157

Published: July 22, 2026Last modified: July 22, 2026

Description

In 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).

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/3d9601c029b934b5b6a10f99791467b10eb6b211
• https://git.kernel.org/stable/c/6a3d27116be2c5fb9a03d5cf37c486ac517f3689
• https://git.kernel.org/stable/c/6d91acc7fb85d33ea58fca9b964a32a453937f4b
• https://git.kernel.org/stable/c/f6b2569ae29b666fd15ff2848684c445ba442a39