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CVE-2026-64094

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as pr…

Published Jul 19, 2026CWE-476EPSS 0.15%

Overview

CVE-2026-64094 is a medium-severity vulnerability. It was published on July 19, 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:

batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface

Without rtnl_lock held, a hardif might be retrieved as primary interface of

a meshif, but then (while operating on this interface) getting decoupled

from the mesh interface. In this case, the meshif still exists but the

pointer from the primary hardif to the meshif is set to NULL.

The mesh_iface must be checked first to be non-NULL before continuing to

send an ARP request using meshif.

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/0f3ebd7bb417aabc44853cc7c2a184ebb0e05b45Refgit.kernel.org/stable/c/2a8c9e86529156c62d9187b9ed9454c31665ad33Refgit.kernel.org/stable/c/4f6266735a0ba6a568b6d4c9fa51c33a5a7f2d70Refgit.kernel.org/stable/c/53cb3511f6eda37d3bd923545fdba6013b6d7bb7Refgit.kernel.org/stable/c/555b8d3f5c313d81d46274fd0976352dafc80124Refgit.kernel.org/stable/c/6921a7683ae9ad0208d829e71f725a9e25ccff49Refgit.kernel.org/stable/c/efb62458c94db1fe3a287e7e89c31b0cfb03f938Refgit.kernel.org/stable/c/f80d3d98d2ff78d9e2fe5d68b1f45948c4f7bd24

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64094?

CVE-2026-64094 is a medium-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-64094?

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-2026-64094?

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-2026-64094?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64094 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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