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CVE-2025-21783

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: gpiolib: Fix crash on error in gpiochip_get_ngpios() The gpiochip_get_ngpios() uses chip_*() macros to print messages.

Published Feb 27, 2025CWE-476EPSS 0.22%

Overview

CVE-2025-21783 is a medium-severity vulnerability. It was published on February 27, 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: Fix crash on error in gpiochip_get_ngpios()

The gpiochip_get_ngpios() uses chip_*() macros to print messages.

However these macros rely on gpiodev to be initialised and set,

which is not the case when called via bgpio_init(). In such a case

the printing messages will crash on NULL pointer dereference.

Replace chip_*() macros by the respective dev_*() ones to avoid

such crash.

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/189fb76215e479c10731baabb50f1a352d2078f5Refgit.kernel.org/stable/c/4d9b2b62e1136d10f661ec4c0c268140b6f74f4fRefgit.kernel.org/stable/c/7b4aebeecbbd5b5fe73e35fad3f62ed21aa7ef44Refgit.kernel.org/stable/c/a7052afa9eae2239e25943baa8817a6a56e8aa68

How CyberStrike helps

Frequently asked questions

What is CVE-2025-21783?

CVE-2025-21783 is a medium-severity vulnerability. It was published on February 27, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-21783?

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-2025-21783?

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-2025-21783?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-21783 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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