CVE-2026-53167
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.
Does this matter?
Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.13% probability · 2th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-908
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://git.kernel.org/stable/c/1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bdPatch
- https://git.kernel.org/stable/c/4e14f29473eda18fb2af082dd2fd4c12139862cdPatch
- https://git.kernel.org/stable/c/4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276cPatch
- https://git.kernel.org/stable/c/56763afa013444a9d84ca1b74e4b7130942177baPatch
- https://git.kernel.org/stable/c/651801d75ad0897dbd331b3cc6a4da3e78f60d42Patch
- https://git.kernel.org/stable/c/68a9282d5ea5b8780d59122505ad633e6daede90Patch
- https://git.kernel.org/stable/c/8bef2f840b43e0879478fe3aaa9ff2f0b80798a5Patch
- https://git.kernel.org/stable/c/feafe8ccb1584254f59fbd4946d6ca7ef1e3e99cPatch
- https://project-zero.issues.chromium.org/issues/514653451
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.