Is CVE-2026-53174 in the CISA KEV catalog?

No. CVE-2026-53174 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-53174?

CVE-2026-53174 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2026-53174?

CVE-2026-53174 has an EPSS score of 0.13% (3th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-53174?

Upgrade linux on debian unstable to 7.0.13-1 or later.

CVE & CISA-KEV Catalog

CVE-2026-53174

HIGH

7.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: ovl: keep err zero after successful ovl_cache_get() ovl_iterate_merged() stores PTR_ERR(cache) in err before checking IS_ERR(cache). On success err holds the truncated cache pointer and can be returned as a bogus non-zero error. The syzbot reproducer reaches this through overlay-on-overlay readdir: getdents64 iterate_dir(outer overlay file) ovl_iterate_merged() ovl_cache_get() ovl_dir_read_merged() ovl_dir_read() iterate_dir(inner overlay file) ovl_iterate_merged() Only compute PTR_ERR(cache) on the error path.

How to fix

Remediation Available

linuxDebian

Fixed in:7.0.13-1CVE-2026-53174

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.13%probability of exploitation in 30 days

3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Patch2

Embed a live status badge for CVE-2026-53174

Markdown

[![CVE-2026-53174](https://tridentstack.com/cve/badge/CVE-2026-53174.svg)](https://tridentstack.com/cve/CVE-2026-53174)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-53174"><img src="https://tridentstack.com/cve/badge/CVE-2026-53174.svg" alt="CVE-2026-53174"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-06.