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CVE-2026-80675

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: libbpf: Reject non-exclusive metadata maps in the signed loader The loader verifies map->sha against the metadata hash in its i…

Published Aug 28, 2026EPSS 0.17%

Overview

CVE-2026-80675 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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:

libbpf: Reject non-exclusive metadata maps in the signed loader

The loader verifies map->sha against the metadata hash in its

instructions. map->sha is calculated when BPF_OBJ_GET_INFO_BY_FD is

called on the frozen map.

While the map is frozen, the /signed loader/ must also ensure the map

is exclusive, as, without exclusivity (which a hostile host could just

omit when loading the loader), another BPF program with map access can

mutate the contents afterwards, so the check passes on stale data.

With the extra check as part of the signed loader, it now refuses to

move on with map->sha validation if the host set it up wrongly.

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/0dad5adeb34b6f78a883e8faa6a1c947a240e7c9Refgit.kernel.org/stable/c/0fb6c9ed6493b4af01be8bb0a384574eba7df636Refgit.kernel.org/stable/c/b6862b6a25c6a925fb0b0e549ee4a52a8d2966fb

How CyberStrike helps

Frequently asked questions

What is CVE-2026-80675?

CVE-2026-80675 is a high-severity vulnerability. It was published on August 28, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-80675?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2026-80675?

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-2026-80675?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-80675 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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