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CVE-2025-37812

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: usb: cdns3: Fix deadlock when using NCM gadget The cdns3 driver has the same NCM deadlock as fixed in cdnsp by commit 58f2fcb3a…

Published May 8, 2025CWE-667EPSS 0.16%

Overview

CVE-2025-37812 is a medium-severity vulnerability. It was published on May 8, 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:

usb: cdns3: Fix deadlock when using NCM gadget

The cdns3 driver has the same NCM deadlock as fixed in cdnsp by commit

58f2fcb3a845 ("usb: cdnsp: Fix deadlock issue during using NCM gadget").

Under PREEMPT_RT the deadlock can be readily triggered by heavy network

traffic, for example using "iperf --bidir" over NCM ethernet link.

The deadlock occurs because the threaded interrupt handler gets

preempted by a softirq, but both are protected by the same spinlock.

Prevent deadlock by disabling softirq during threaded irq handler.

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/09e90a9689a4aac7a2f726dc2aa472b0b37937b7Refgit.kernel.org/stable/c/48a62deb857f0694f611949015e70ad194d97159Refgit.kernel.org/stable/c/59a760e4796a3cd88d8b9d7706e0a638de677751Refgit.kernel.org/stable/c/74cd6e408a4c010e404832f0e4609d29bf1d0c41Refgit.kernel.org/stable/c/a1059896f2bfdcebcdc7153c3be2307ea319501fRefgit.kernel.org/stable/c/b96239582531775f2fdcb14de29bdb6870fd4c8cRefgit.kernel.org/stable/c/c27db84ed44e50ff90d9e3a2a25fae2e0a0fa015Refgit.kernel.org/stable/c/eebfb64c624fc738b669100173344fb441c5e719Reflists.debian.org/debian-lts-announce/2025/05/msg00030.htmlReflists.debian.org/debian-lts-announce/2025/05/msg00045.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37812?

CVE-2025-37812 is a medium-severity vulnerability. It was published on May 8, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-37812?

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-2025-37812?

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-2025-37812?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37812 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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