5.5

CVE-2026-53167: linux Use of Uninitialized Resource

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-53167DEBIAN-CVE-2026-53167CGA-3cpp-vvx3-vx6x
Published 25-06-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-53167 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.13%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 32 · Related 32
MGASA-2026-0312OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22742-1SUSE-SU-2026:22769-1SUSE-SU-2026:22809-1SUSE-SU-2026:22810-1

Timeline

  1. 25-06-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu169 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-147.147 | < 7.0.0-31.31
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1067.70 | < 7.0.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard13 products
  • linux-aws-6.12All versions (No fix recorded)
  • linux-aws-6.18< 6.18.38-r0
  • linux-azure-6.12All versions (No fix recorded)
  • linux-azure-6.18< 6.18.38-r0
  • linux-gcp-6.12All versions (No fix recorded)
Linux2 products
  • linux≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < feafe8ccb1584254f59fbd4946d6ca7ef1e3e99c | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 651801d75ad0897dbd331b3cc6a4da3e78f60d42 | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 4e14f29473eda18fb2af082dd2fd4c12139862cd | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 8bef2f840b43e0879478fe3aaa9ff2f0b80798a5 | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 68a9282d5ea5b8780d59122505ad633e6daede90 | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 56763afa013444a9d84ca1b74e4b7130942177ba | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 1fb8735a3a4d894f8c1f90b741a3ab1d3817f9bd | ≥ 2d45ba381a74a743eeaa2b06c7c5c0d2bf73ba1a, < 4e3d1b2c48ca6c55f1e9ca7f8dccc76f120f276c | 2.6.36
  • linux_kernel≥ 2.6.36, < 6.18.36 | ≥ 6.19, < 7.0.13 | 7.1:rc1 | 7.1:rc2 | 7.1:rc3 | 7.1:rc4 | 7.1:rc5 | 7.1:rc6
Debian1 product
  • linux< 6.1.177-1 | < 6.12.95-1 | < 7.0.13-1

4 vendors · 185 products

References

34 links
Show all 34 references