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CVE-2023-53636

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: clk: microchip: fix potential UAF in auxdev release callback Similar to commit 1c11289b34ab ("peci: cpu: Fix use-after-free in…

Published Oct 7, 2025CWE-416EPSS 0.20%

Overview

CVE-2023-53636 is a high-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, 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:

clk: microchip: fix potential UAF in auxdev release callback

Similar to commit 1c11289b34ab ("peci: cpu: Fix use-after-free in

adev_release()"), the auxiliary device is not torn down in the correct

order. If auxiliary_device_add() fails, the release callback will be

called twice, resulting in a UAF. Due to timing, the auxdev code in this

driver "took inspiration" from the aforementioned commit, and thus its

bugs too!

Moving auxiliary_device_uninit() to the unregister callback instead

avoids the issue.

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/5b4052aa956e11bcd19e50ca559eb38dcb46201bRefgit.kernel.org/stable/c/7455b7007b9e93bcc2bc9c1c6c73a228e3152069Refgit.kernel.org/stable/c/934406b2d42eaf3fc57f5546cc68ff7ab9680bb3Refgit.kernel.org/stable/c/d7d6dacf39ed102d7667721ca1700022c9c8b11a

How CyberStrike helps

Frequently asked questions

What is CVE-2023-53636?

CVE-2023-53636 is a high-severity vulnerability. It was published on October 7, 2025 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-53636?

This vulnerability has a CVSS 3.1 base score of 7.8, 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-2023-53636?

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-2023-53636?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-53636 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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