PT-2026-52263 · Linux · Linux

Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-53167

Mitre

In the Linux kernel, the following vulnerability has been resolved:

fuse: limit FUSE NOTIFY RETRIEVE to uptodate folios

FUSE NOTIFY RETRIEVE must be limited to uptodate folios; !uptodate folios can contain uninitialized data. Since FUSE NOTIFY RETRIEVE is intended to only return data that is already in the page cache and not wait for data from the FUSE daemon, treat !uptodate folios as if they weren't present.

This only has security impact on systems that don't enable automatic zero-initialization of all page allocations via CONFIG INIT ON ALLOC DEFAULT ON or init on alloc=1.

Related Identifiers

CVE-2026-53167

Affected Products

Linux

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-53167 · Security Note
• https://git.kernel.org/stable/c/1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd · Note
• https://git.kernel.org/stable/c/4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c · Note
• https://git.kernel.org/stable/c/56763afa013444a9d84ca1b74e4b7130942177ba · Note