CVE-2025-38519

mm/damon: fix divide by zero in damon_get_intervals_score()

Description

In the Linux kernel, the following vulnerability has been resolved: mm/damon: fix divide by zero in damon_get_intervals_score() The current implementation allows having zero size regions with no special reasons, but damon_get_intervals_score() gets crashed by divide by zero when the region size is zero. [ 29.403950] Oops: divide error: 0000 [#1] SMP NOPTI This patch fixes the bug, but does not disallow zero size regions to keep the backward compatibility since disallowing zero size regions might be a breaking change for some users. In addition, the same crash can happen when intervals_goal.access_bp is zero so this should be fixed in stable trees as well.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/ca4bb9ac706f05ead8ac1cce7b8245fc0645a687
https://git.kernel.org/stable/c/bd225b9591442065beb876da72656f4a2d627d03

Frequently Asked Questions

What is the severity of CVE-2025-38519?: CVE-2025-38519 has not yet been assigned a CVSS score.
How to fix CVE-2025-38519?: To fix CVE-2025-38519, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38519 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38519 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38519?: CVE-2025-38519 affects Linux Linux, Linux Linux.

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