CVE-2025-38519: Linux kernel · mm/damon: fix divide by zero in damon_get_intervals_score()
Source GCVE Database
Not known to be exploited · CVSS 5.5 Medium.
Data as of 13 Nov 2026, 20:18 UTC
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Aug 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
AI-suggested
A patch has been released that fixes the divide-by-zero error in damon_get_intervals_score(). Users should apply the official kernel updates containing this fix. Since the patch maintains backward compatibility by allowing zero-size regions, no additional configuration changes are required.
Description
CVE-2025-38519 is a vulnerability in the Linux kernel's mm/damon subsystem where a divide-by-zero error occurs in the damon_get_intervals_score() function. This happens when the region size is zero or when intervals_goal.access_bp is zero, causing a kernel crash (Oops). The issue is fixed by a patch that prevents the divide-by-zero without disallowing zero-size regions to maintain backward compatibility.