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CVE-2022-50453

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: gpiolib: cdev: fix NULL-pointer dereferences There are several places where we can crash the kernel by requesting lines, unbind…

Published Oct 1, 2025CWE-476EPSS 0.16%

Overview

CVE-2022-50453 is a medium-severity vulnerability. It was published on October 1, 2025 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:

gpiolib: cdev: fix NULL-pointer dereferences

There are several places where we can crash the kernel by requesting

lines, unbinding the GPIO device, then calling any of the system calls

relevant to the GPIO character device's annonymous file descriptors:

ioctl(), read(), poll().

While I observed it with the GPIO simulator, it will also happen for any

of the GPIO devices that can be hot-unplugged - for instance any HID GPIO

expander (e.g. CP2112).

This affects both v1 and v2 uAPI.

This fixes it partially by checking if gdev->chip is not NULL but it

doesn't entirely remedy the situation as we still have a race condition

in which another thread can remove the device after the check.

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/533aae7c94dbc2b14301cfd68ae7e0e90f0c8438Refgit.kernel.org/stable/c/6d79546622baab843172b52c3af035f83c1b21dfRefgit.kernel.org/stable/c/7c755a2d6df511eeb5afba966ac28140f9ea5063Refgit.kernel.org/stable/c/ac6ce3cd7a3e10a2e37b8970bab81b4d33d5cfc3Refgit.kernel.org/stable/c/d66f68ac9e7ba46b6b90fbe25155723f2126088a

How CyberStrike helps

Frequently asked questions

What is CVE-2022-50453?

CVE-2022-50453 is a medium-severity vulnerability. It was published on October 1, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50453?

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-2022-50453?

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-2022-50453?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-50453 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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