SB20260812381 - Improper input validation in Linux kernel damon

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Main Vulnerability Database SB20260812381

SB20260812381 - Improper input validation in Linux kernel damon

Published: August 12, 2026

Security Bulletin ID SB20260812381
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper input validation (CVE-ID: CVE-2026-68165)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper input validation in damon_set_regions() when processing user-supplied DAMON monitoring target regions. A local user can provide empty regions with equal start and end values to cause a denial of service.

The issue can trigger WARN_ONCE() on kernels built with CONFIG_DAMON_DEBUG_SANITY enabled, and can also lead to a divide-by-zero in damon_merge_two_regions().


Remediation

Install update from vendor's website.

References