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EUVD-2026-39258 · Published Jun 25, 2026
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.
Technologies
Linux Linux Kernel
Weaknesses
CWE-908
CVSS scores
- v3.15.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Privilege Escalation
References
- https://git.kernel.org/stable/c/1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd
- https://git.kernel.org/stable/c/4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c
- https://git.kernel.org/stable/c/56763afa013444a9d84ca1b74e4b7130942177ba
- https://git.kernel.org/stable/c/4e14f29473eda18fb2af082dd2fd4c12139862cd
- https://git.kernel.org/stable/c/651801d75ad0897dbd331b3cc6a4da3e78f60d42
- https://git.kernel.org/stable/c/68a9282d5ea5b8780d59122505ad633e6daede90
Potentially impacted assets
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