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CVE-2026-46046

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ext4: fix missing brelse() in ext4_xattr_inode_dec_ref_all() The commit c8e008b60492 ("ext4: ignore xattrs past end") introduce…

Published May 27, 2026EPSS 0.17%

Overview

CVE-2026-46046 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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 missing brelse() in ext4_xattr_inode_dec_ref_all()

The commit c8e008b60492 ("ext4: ignore xattrs past end")

introduced a refcount leak in when block_csum is false.

ext4_xattr_inode_dec_ref_all() calls ext4_get_inode_loc() to

get iloc.bh, but never releases it with brelse().

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/097227f1ffe1a85bc3c359f81c71e3d40e06e920Refgit.kernel.org/stable/c/153ab2c52355fbebcae622db8e7b506492c73a29Refgit.kernel.org/stable/c/1bc1107a3a403a6d440673ed6666f7b07ef868a8Refgit.kernel.org/stable/c/1e6b0a69bf2c9c819255c7566e4355536d81d9cfRefgit.kernel.org/stable/c/77d059519382bd66283e6a4e83ee186e87e7708fRefgit.kernel.org/stable/c/b706d00206a9e82362a9633efbd8b5775650169bRefgit.kernel.org/stable/c/dd98a5603a212ea9c96c6982ccdbcc748fdb9a56Refgit.kernel.org/stable/c/f072906688933bf47fabbaf63560be03357c8298

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46046?

CVE-2026-46046 is a medium-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-46046?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46046?

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-2026-46046?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46046 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.

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