SB2026072033 - Missing Release of Resource after Effective Lifetime in Linux kernel damon

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Main Vulnerability Database SB2026072033

SB2026072033 - Missing Release of Resource after Effective Lifetime in Linux kernel damon

Published: July 20, 2026

Security Bulletin ID SB2026072033
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-64184)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


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

The vulnerability exists due to improper release of a resource in damon_sysfs_memcg_path_to_id() in mm/damon/sysfs-schemes.c when iterating memory cgroups and breaking out of the mem_cgroup_iter() loop early. A local user can trigger the affected code path to cause a denial of service.

The issue results from a leaked cgroup reference because mem_cgroup_iter_break() is not called before exiting the iteration.


Remediation

Install update from vendor's website.

References