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CVE-2025-37940

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ftrace: Add cond_resched() to ftrace_graph_set_hash() When the kernel contains a large number of functions that can be traced,…

Published May 20, 2025CWE-667EPSS 0.16%

Overview

CVE-2025-37940 is a medium-severity vulnerability. It was published on May 20, 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:

ftrace: Add cond_resched() to ftrace_graph_set_hash()

When the kernel contains a large number of functions that can be traced,

the loop in ftrace_graph_set_hash() may take a lot of time to execute.

This may trigger the softlockup watchdog.

Add cond_resched() within the loop to allow the kernel to remain

responsive even when processing a large number of functions.

This matches the cond_resched() that is used in other locations of the

code that iterates over all functions that can be traced.

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/1fce9574b9d515bcb8a75379a8053e18602424e3Refgit.kernel.org/stable/c/42ea22e754ba4f2b86f8760ca27f6f71da2d982cRefgit.kernel.org/stable/c/4429535acab750d963fdc3dfcc9e0eee42f4d599Refgit.kernel.org/stable/c/5d336ac215e5c76e43ef4bca9ba699835e53e2fdRefgit.kernel.org/stable/c/618655d54c5f8af5d57b77491d08c0f0ff77d114Refgit.kernel.org/stable/c/72be43ff061a889c6ee648a330a42486cafa15a6Refgit.kernel.org/stable/c/8dd7d7280357596ba63dfdb4c1725d9dd24bd42aRefgit.kernel.org/stable/c/dd38803c9088b848c6b56f4f6d7efc4497bfde61Refgit.kernel.org/stable/c/e5b4ae6f01d4a510d5725eca7254519a1093920dReflists.debian.org/debian-lts-announce/2025/05/msg00045.html

How CyberStrike helps

Frequently asked questions

What is CVE-2025-37940?

CVE-2025-37940 is a medium-severity vulnerability. It was published on May 20, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-37940?

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-2025-37940?

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-2025-37940?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-37940 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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