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CVE-2026-72227

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: batman-adv: mcast: avoid OOB read of num_dests header Before the access to struct batadv_tvlv_mcast_tracker's num_dests, it is…

Published Aug 15, 2026EPSS 0.33%

Overview

CVE-2026-72227 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

batman-adv: mcast: avoid OOB read of num_dests header

Before the access to struct batadv_tvlv_mcast_tracker's num_dests, it is

attempted to check whether enough space is actually in the network header.

But instead of using offsetofend() to check for the whole size (2) which

must be accessible, offsetof() of is called. The latter is always returning

0. The comparison with the network header length will always return that

enough data is available - even when only 1 or 0 bytes are accessible.

Instead of using offsetofend(), use the more common check for the whole

header.

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/38eaed28e250895d56f4b7989bd65479a511c5c3Refgit.kernel.org/stable/c/7d1a877670bc2e901241073f022ca8d1b2f85f1cRefgit.kernel.org/stable/c/80f62893d135f415e7a374dd47b468ec298f7aedRefgit.kernel.org/stable/c/d2b657c9653fcebca828a2ead13f444e0da68817

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72227?

CVE-2026-72227 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-72227?

This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-72227?

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-2026-72227?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72227 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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