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CVE-2026-80599

8.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: ensure accessible eth_hdr proto field When batadv_get_vid() accesses the proto field of the ethernet header, i…

Published Aug 28, 2026EPSS 0.42%

Overview

CVE-2026-80599 is a high-severity vulnerability. It was published on August 28, 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: dat: ensure accessible eth_hdr proto field

When batadv_get_vid() accesses the proto field of the ethernet header, it

is not checking if the data itself is accessible. The caller is responsible

for it. But in contrast to other call sites, batadv_dat_get_vid() and its

caller didn't make sure this is true. This could have caused an

out-of-bounds access.

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/26560c4a03dc4d607331600c187f59ab2df5f341Refgit.kernel.org/stable/c/3c62694c31f043568c3f4784b8d247cc3bea6b4cRefgit.kernel.org/stable/c/4407ff3af469356f9641c4a6e7072309bae86beaRefgit.kernel.org/stable/c/5836a050d02e9598fa0f71e88dde28b63dfa35e3Refgit.kernel.org/stable/c/6d3ea37074bb747f745d28138f87745ba9bd97c5Refgit.kernel.org/stable/c/7913935d41f166c367bbf7cc76a79e50044388e8Refgit.kernel.org/stable/c/8f76277d02176cd739945bba3379448e2e22e799Refgit.kernel.org/stable/c/da3677b5ed362742d30ceab31bfafcdc74dc2642

How CyberStrike helps

Frequently asked questions

What is CVE-2026-80599?

CVE-2026-80599 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-80599?

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-2026-80599?

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-2026-80599?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80599 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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