---
id: CVE-2026-64184
title: 'mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()

  damon_sysfs_memcg_path_to_id() breaks mem_cgroup_iter() loop without
  calling mem_cgroup_iter_break().  Thi…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 <
    082351f9d40007414ad6af062b3a26fa02fd4b5f
  - >-
    Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 <
    30a361be33f3793b9ecbd10ab7be6d0564819b79
  - >-
    Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 <
    302e02f9ba49f81418ec2a749ae6f5cac1d424e9
  - >-
    Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 <
    1bd31386ec3b9ccec10c04429948a306ec5897c0
  - >-
    Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 <
    d4e7b5c4cc353f154d5ab8bb2e1ce7714d77a6e9
  - Linux 6.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:31:38.778626Z'
published: '2026-07-19'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:34:28.728Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64184'
references:
  - url: 'https://git.kernel.org/stable/c/082351f9d40007414ad6af062b3a26fa02fd4b5f'
  - url: 'https://git.kernel.org/stable/c/30a361be33f3793b9ecbd10ab7be6d0564819b79'
  - url: 'https://git.kernel.org/stable/c/302e02f9ba49f81418ec2a749ae6f5cac1d424e9'
  - url: 'https://git.kernel.org/stable/c/1bd31386ec3b9ccec10c04429948a306ec5897c0'
  - url: 'https://git.kernel.org/stable/c/d4e7b5c4cc353f154d5ab8bb2e1ce7714d77a6e9'
tags:
  - cve.org
epss: 0.00114
epssPercentile: 0.01486
ingestedAt: '2026-11-06T16:57:43.225Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()

damon_sysfs_memcg_path_to_id() breaks mem_cgroup_iter() loop without
calling mem_cgroup_iter_break().  This leaks the cgroup reference.  Fix
the issue by calling mem_cgroup_iter_break() before the break.

The issue was discovered [1] by Sashiko.

## Affected

- `Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 < 082351f9d40007414ad6af062b3a26fa02fd4b5f`
- `Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 < 30a361be33f3793b9ecbd10ab7be6d0564819b79`
- `Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 < 302e02f9ba49f81418ec2a749ae6f5cac1d424e9`
- `Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 < 1bd31386ec3b9ccec10c04429948a306ec5897c0`
- `Linux >= 29cbb9a13f05b20f0777c60db9603730b487a4e0 < d4e7b5c4cc353f154d5ab8bb2e1ce7714d77a6e9`
- `Linux 6.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.