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.

Classification

CVE ID: CVE-2025-37940

Affected Products

Vendor: Linux

Product: Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 12.76% (scored less or equal to compared to others)

EPSS Date: 2025-06-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-37940
https://git.kernel.org/stable/c/e5b4ae6f01d4a510d5725eca7254519a1093920d
https://git.kernel.org/stable/c/618655d54c5f8af5d57b77491d08c0f0ff77d114
https://git.kernel.org/stable/c/dd38803c9088b848c6b56f4f6d7efc4497bfde61
https://git.kernel.org/stable/c/8dd7d7280357596ba63dfdb4c1725d9dd24bd42a
https://git.kernel.org/stable/c/5d336ac215e5c76e43ef4bca9ba699835e53e2fd
https://git.kernel.org/stable/c/1fce9574b9d515bcb8a75379a8053e18602424e3
https://git.kernel.org/stable/c/4429535acab750d963fdc3dfcc9e0eee42f4d599
https://git.kernel.org/stable/c/72be43ff061a889c6ee648a330a42486cafa15a6
https://git.kernel.org/stable/c/42ea22e754ba4f2b86f8760ca27f6f71da2d982c

Timeline