PT-2026-61474 · Linux · Linux

CVE-2026-64157 · Published 2026-07-19 · Updated 2026-07-19

NVD

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).

Related Identifiers

CVE-2026-64157

Affected Products

Linux

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-64157 · Security Note
• https://git.kernel.org/stable/c/6a3d27116be2c5fb9a03d5cf37c486ac517f3689 · Note
• https://git.kernel.org/stable/c/3d9601c029b934b5b6a10f99791467b10eb6b211 · Note
• https://git.kernel.org/stable/c/6d91acc7fb85d33ea58fca9b964a32a453937f4b · Note
• https://git.kernel.org/stable/c/f6b2569ae29b666fd15ff2848684c445ba442a39 · Note