---
id: CVE-2026-23144
title: 'mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure

  When a context DAMON sysfs directory setup is failed after setup of attrs/
  directory, subdirectories…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 <
    db7dfe78fc81bdd2b532d77f340fe453f2360426
  - >-
    Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 <
    43964644348f6b1add3055c4a6cae8f77d892a6e
  - >-
    Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 <
    5651c0c391c0029541794f9c4c9597faecfd401f
  - >-
    Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 <
    78b4eb99751ebd37ceade78810bf94de80f7fb3a
  - >-
    Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 <
    9814cc832b88bd040fc2a1817c2b5469d0f7e862
  - Linux 5.18
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-10T20:42:15.595572Z'
published: '2026-02-14'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:25:33.137Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23144'
references:
  - url: 'https://git.kernel.org/stable/c/db7dfe78fc81bdd2b532d77f340fe453f2360426'
  - url: 'https://git.kernel.org/stable/c/43964644348f6b1add3055c4a6cae8f77d892a6e'
  - url: 'https://git.kernel.org/stable/c/5651c0c391c0029541794f9c4c9597faecfd401f'
  - url: 'https://git.kernel.org/stable/c/78b4eb99751ebd37ceade78810bf94de80f7fb3a'
  - url: 'https://git.kernel.org/stable/c/9814cc832b88bd040fc2a1817c2b5469d0f7e862'
tags:
  - cve.org
epss: 0.00143
epssPercentile: 0.03214
ingestedAt: '2026-10-19T18:35:50.099Z'
---

## Overview

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

mm/damon/sysfs: cleanup attrs subdirs on context dir setup failure

When a context DAMON sysfs directory setup is failed after setup of attrs/
directory, subdirectories of attrs/ directory are not cleaned up.  As a
result, DAMON sysfs interface is nearly broken until the system reboots,
and the memory for the unremoved directory is leaked.

Cleanup the directories under such failures.

## Affected

- `Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 < db7dfe78fc81bdd2b532d77f340fe453f2360426`
- `Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 < 43964644348f6b1add3055c4a6cae8f77d892a6e`
- `Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 < 5651c0c391c0029541794f9c4c9597faecfd401f`
- `Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 < 78b4eb99751ebd37ceade78810bf94de80f7fb3a`
- `Linux >= c951cd3b89010c7a4751b9d4ea074007e44851e6 < 9814cc832b88bd040fc2a1817c2b5469d0f7e862`
- `Linux 5.18`

## Remediation

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