Medium 5.5Published Jun 25, 2026

CVE-2026-53167fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios

Updated under an hour ago (Oct 26, 2026, 3:40 PM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before feafe8ccb1584254f59fbd4946d6ca7ef1e3e99c; from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 651801d75ad0897dbd331b3cc6a4da3e78f60d42; from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 4e14f29473eda18fb2af082dd2fd4c12139862cd; from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 8bef2f840b43e0879478fe3aaa9ff2f0b80798a5; from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 68a9282d5ea5b8780d59122505ad633e6daede90; from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 56763afa013444a9d84ca1b74e4b7130942177ba; 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a builds before 1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd; from 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.36 before 6.18.36; from 6.19 before 7.0.13; 7.1; 7.1; 7.1; 7.1; 7.1; 7.1	NVD

References

References

https://git.kernel.org/stable/c/feafe8ccb1584254f59fbd4946d6ca7ef1e3e99c	patch
https://git.kernel.org/stable/c/651801d75ad0897dbd331b3cc6a4da3e78f60d42	patch
https://git.kernel.org/stable/c/4e14f29473eda18fb2af082dd2fd4c12139862cd	patch
https://git.kernel.org/stable/c/8bef2f840b43e0879478fe3aaa9ff2f0b80798a5	patch
https://git.kernel.org/stable/c/68a9282d5ea5b8780d59122505ad633e6daede90	patch
https://git.kernel.org/stable/c/56763afa013444a9d84ca1b74e4b7130942177ba	patch
https://git.kernel.org/stable/c/1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd	patch
https://git.kernel.org/stable/c/4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c	patch
https://project-zero.issues.chromium.org/issues/514653451
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.