Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-46094

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access The bounds check for the next xattr entry in check_xat…

Published May 27, 2026CWE-125EPSS 0.13%

Overview

CVE-2026-46094 is a high-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix bounds check in check_xattrs() to prevent out-of-bounds access

The bounds check for the next xattr entry in check_xattrs() uses

(void *)next >= end, which allows next to point within sizeof(u32)

bytes of end. On the next loop iteration, IS_LAST_ENTRY() reads 4

bytes via *(__u32 *)(entry), which can overrun the valid xattr region.

For example, if next lands at end - 1, the check passes since

next < end, but IS_LAST_ENTRY() reads 4 bytes starting at end - 1,

accessing 3 bytes beyond the valid region.

Fix this by changing the check to (void *)next + sizeof(u32) > end,

ensuring there is always enough space for the IS_LAST_ENTRY() read

on the subsequent iteration.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/520986722dbf869c122252123fc161c7302eab7dRefgit.kernel.org/stable/c/537e065977022aa22f2c2503e8accaf16622e0fdRefgit.kernel.org/stable/c/5a5314d2387633a272a04d1bd8727f99058e4e68Refgit.kernel.org/stable/c/ab6da97bc310db35d4e4ef5354bc3ff626b0698cRefgit.kernel.org/stable/c/eceafc31ea7b42c984ece10d79d505c0bb6615d5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46094?

CVE-2026-46094 is a high-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-46094?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46094?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-46094?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46094 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related HIGH CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999