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CVE-2026-53222

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ptp: ocp: fix resource freeing order Commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable events") added a call…

Published Jun 25, 2026CWE-401EPSS 0.12%

Overview

CVE-2026-53222 is a medium-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

ptp: ocp: fix resource freeing order

Commit a60fc3294a37 ("ptp: rework ptp_clock_unregister() to disable

events") added a call to ptp_disable_all_events() which changes the

configuration of pins if they support EXTTS events. In ptp_ocp_detach()

pins resources are freed before ptp_clock_unregister() and it leads to

use-after-free during driver removal. Fix it by changing the order of

free/unregister calls. To avoid irq handler running on the other core

while ptp device unregistering, call synchronize_irq() after HW is

configured to stop producing irqs and no irqs are in-flight.

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/627366c51145a07f675b1800fb5ea2ec960bd900Refgit.kernel.org/stable/c/aa03698bb28d3be5ee180adb185395054b342b04

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53222?

CVE-2026-53222 is a medium-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-53222?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-53222?

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-2026-53222?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53222 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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