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CVE-2025-38671

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: i2c: qup: jump out of the loop in case of timeout Original logic only sets the return value but doesn't jump out of the loop if…

Published Aug 22, 2025EPSS 0.16%

Overview

CVE-2025-38671 is a medium-severity vulnerability. It was published on August 22, 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:

i2c: qup: jump out of the loop in case of timeout

Original logic only sets the return value but doesn't jump out of the

loop if the bus is kept active by a client. This is not expected. A

malicious or buggy i2c client can hang the kernel in this case and

should be avoided. This is observed during a long time test with a

PCA953x GPIO extender.

Fix it by changing the logic to not only sets the return value, but also

jumps out of the loop and return to the caller with -ETIMEDOUT.

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/0d33913fce67a93c1eb83396c3c9d6b411dcab33Refgit.kernel.org/stable/c/42c4471b30fa203249f476dd42321cd7efb7f6a8Refgit.kernel.org/stable/c/89459f168b78e5c801dc8b7ad037b62898bc4f57Refgit.kernel.org/stable/c/a7982a14b3012527a9583d12525cd0dc9f8d8934Refgit.kernel.org/stable/c/acfa2948be630ad857535cb36153697f3cbf9ca9Refgit.kernel.org/stable/c/c523bfba46c4b4d7676fb050909533a766698ecdRefgit.kernel.org/stable/c/cbec4406998185e0311ae97dfacc649f9cd79b0bRefgit.kernel.org/stable/c/d05ec13aa3eb868a60dc961b489053a643863ddcReflists.debian.org/debian-lts-announce/2025/10/msg00007.htmlReflists.debian.org/debian-lts-announce/2025/10/msg00008.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-38671?

CVE-2025-38671 is a medium-severity vulnerability. It was published on August 22, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-38671?

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-2025-38671?

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-2025-38671?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-38671 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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