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CVE-2026-72226

9.8 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it.

Published Aug 15, 2026EPSS 0.76%

Overview

CVE-2026-72226 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

batman-adv: tt: prevent TVLV OOB check overflow

A TT unicast TVLV contains the number of VLANs stored in it. This number is

an u16 and gets multiplied by the size of the struct

batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16

used to store the tt_vlan_len. All additional safety checks to prevent

out-of-bounds access of the TVLV buffer are invalid due to this overflow.

Using size_t prevents this overflow and ensures that the safety checks

compare against the actual buffer requirements.

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/0de12a4c4847f571d82a9cd96bc633eded41d7c6Refgit.kernel.org/stable/c/1898273c5dc8148267ef9f97cd2517a2822350e7Refgit.kernel.org/stable/c/3256c05d5a9db34346eaf20f52dddde984852d77Refgit.kernel.org/stable/c/604bd5042fbcd1ab9f7cd98fd847ec017aeede8aRefgit.kernel.org/stable/c/6222b443686525cb5a9b6a9cecf23b2e2ab23e2aRefgit.kernel.org/stable/c/7319c0794f91be2734aac695794e7203606b49f8Refgit.kernel.org/stable/c/7a581d9aaba8c82bd6177fa36b2588eea77f6e2bRefgit.kernel.org/stable/c/d6ff4764ff784ede25f5c83a6f5883a74c93a5ea

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72226?

CVE-2026-72226 is a critical-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-72226?

This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-72226?

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-2026-72226?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72226 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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