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CVE-2026-43153

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: xfs: remove xfs_attr_leaf_hasname The calling convention of xfs_attr_leaf_hasname() is problematic, because it returns a NULL b…

Published May 6, 2026EPSS 0.18%

Overview

CVE-2026-43153 is a high-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, 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:

xfs: remove xfs_attr_leaf_hasname

The calling convention of xfs_attr_leaf_hasname() is problematic, because

it returns a NULL buffer when xfs_attr3_leaf_read fails, a valid buffer

when xfs_attr3_leaf_lookup_int returns -ENOATTR or -EEXIST, and a

non-NULL buffer pointer for an already released buffer when

xfs_attr3_leaf_lookup_int fails with other error values.

Fix this by simply open coding xfs_attr_leaf_hasname in the callers, so

that the buffer release code is done by each caller of

xfs_attr3_leaf_read.

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/2fbc8421d1db102c0e5458607e042a23a03648b1Refgit.kernel.org/stable/c/3a65ea768b8094e4699e72f9ab420eb9e0f3f568Refgit.kernel.org/stable/c/457121c01f609b9934addbb04d5c1ef638c71c61Refgit.kernel.org/stable/c/530082df991903f3330354e99e0cb7b05debfa86

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43153?

CVE-2026-43153 is a high-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-43153?

This vulnerability has a CVSS 3.1 base score of 7.8, 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-2026-43153?

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-2026-43153?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43153 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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