Medium severity · published Jun 25, 2026
CVE-2026-53167
fuse: limit FUSE_NOTIFY_RETRIEVE to uptodate folios
5.5
CVSS
0.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.36 before 6.18.36; 6.19 before 7.0.13; 7.1; 7.1; 7.1; 7.1; +2 more · source: NVD
LI
Linux · Linux
2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before feafe8ccb1584254f59fbd4946d6ca7ef1e3e99c; 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 651801d75ad0897dbd331b3cc6a4da3e78f60d42; 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 4e14f29473eda18fb2af082dd2fd4c12139862cd; 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 8bef2f840b43e0879478fe3aaa9ff2f0b80798a5; 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 68a9282d5ea5b8780d59122505ad633e6daede90; 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a before 56763afa013444a9d84ca1b74e4b7130942177ba; +3 more · source: vendor
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53167
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-53167
Patch
https://git.kernel.org/stable/c/1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd
Patch
https://git.kernel.org/stable/c/4e14f29473eda18fb2af082dd2fd4c12139862cd
Patch
https://git.kernel.org/stable/c/4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c
Patch
https://git.kernel.org/stable/c/56763afa013444a9d84ca1b74e4b7130942177ba
Patch
https://git.kernel.org/stable/c/651801d75ad0897dbd331b3cc6a4da3e78f60d42
Patch
https://git.kernel.org/stable/c/68a9282d5ea5b8780d59122505ad633e6daede90
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