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CVE-2026-64080

9.3 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Snapshot notifier callbacks under lock Both notification handlers currently look up a notifier callback unde…

Published Jul 19, 2026EPSS 0.20%

Overview

CVE-2026-64080 is a critical-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. 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:

firmware: arm_ffa: Snapshot notifier callbacks under lock

Both notification handlers currently look up a notifier callback under

notify_lock, drop the lock, and then dereference the returned

notifier entry. A concurrent unregister can delete and free that

entry in the gap, leaving the handler to dereference stale memory.

Copy the callback pointer and callback data while notify_lock is

still held and invoke the callback only after the lock is dropped.

This keeps the existing callback execution model while removing the

use-after-free window in both the framework and non-framework

notification paths.

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/0e7be42ef2490f19d859a6146324d48cafdc9d5cRefgit.kernel.org/stable/c/38290b180a4d5746baed796d49f88d56d2f336cdRefgit.kernel.org/stable/c/d1e38551fadea230649bc428f0f35c9ee062a072

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64080?

CVE-2026-64080 is a critical-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

How severe is CVE-2026-64080?

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. 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-2026-64080?

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-2026-64080?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64080 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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