Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2025-38519

Severity CVSS v4.0:
Pending analysis
Type:
CWE-369 Divide By Zero
Publication date:
16/08/2025
Last modified:
18/11/2025

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.15 (including) 6.15.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools