---
id: CVE-2026-64185
title: 'sysfs: don''t remove existing directory on update failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  sysfs: don't remove existing directory on update failure

  When sysfs_update_group() is called for a named group and create_files()
  fails (e.g. -ENOMEM), internal_create…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    c5e125c828b701afaf7493b42a14aa89362ff36d
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    ccadd32cc1263802a5969c9efe0e96225450428c
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    14f2c14ae86c4af17a0a9f8ab46dacf2d5fd1d8a
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    31527d80234caf83dc96ad478645e57df9de4472
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    57b285e0368290aa55f79ba11419b96d0ebdb418
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    48fa96538bd2868034d33429e4565fda384d0736
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    708f6926f61f71e09b5e9fd668b9882ccd46e69f
  - >-
    Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 <
    237557b8a81ab948e8332f7c0058e758f081c0a3
  - Linux 4.19
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-06T16:31:44.287179Z'
published: '2026-07-19'
updated: '2026-11-06'
sourceUpdated: '2026-11-06T16:34:28.927Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-64185'
references:
  - url: 'https://git.kernel.org/stable/c/c5e125c828b701afaf7493b42a14aa89362ff36d'
  - url: 'https://git.kernel.org/stable/c/ccadd32cc1263802a5969c9efe0e96225450428c'
  - url: 'https://git.kernel.org/stable/c/14f2c14ae86c4af17a0a9f8ab46dacf2d5fd1d8a'
  - url: 'https://git.kernel.org/stable/c/31527d80234caf83dc96ad478645e57df9de4472'
  - url: 'https://git.kernel.org/stable/c/57b285e0368290aa55f79ba11419b96d0ebdb418'
  - url: 'https://git.kernel.org/stable/c/48fa96538bd2868034d33429e4565fda384d0736'
  - url: 'https://git.kernel.org/stable/c/708f6926f61f71e09b5e9fd668b9882ccd46e69f'
  - url: 'https://git.kernel.org/stable/c/237557b8a81ab948e8332f7c0058e758f081c0a3'
tags:
  - cve.org
epss: 0.00117
epssPercentile: 0.0165
ingestedAt: '2026-11-06T16:57:43.223Z'
---

## Overview

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

sysfs: don't remove existing directory on update failure

When sysfs_update_group() is called for a named group and create_files()
fails (e.g. -ENOMEM), internal_create_group() calls kernfs_remove(kn) on
the group directory.  In the update path, kn was obtained via
kernfs_find_and_get() and refers to a directory that already existed
before this call.  Removing it silently destroys a sysfs group that the
caller did not create.

Only remove the directory if we created it ourselves.  On update failure
the directory remains as it is left empty by remove_files() inside
create_files(), but can be repopulated by a retry.

## Affected

- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < c5e125c828b701afaf7493b42a14aa89362ff36d`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < ccadd32cc1263802a5969c9efe0e96225450428c`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < 14f2c14ae86c4af17a0a9f8ab46dacf2d5fd1d8a`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < 31527d80234caf83dc96ad478645e57df9de4472`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < 57b285e0368290aa55f79ba11419b96d0ebdb418`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < 48fa96538bd2868034d33429e4565fda384d0736`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < 708f6926f61f71e09b5e9fd668b9882ccd46e69f`
- `Linux >= c855cf2759d27142f771173d9fd8e7fdf9cf5138 < 237557b8a81ab948e8332f7c0058e758f081c0a3`
- `Linux 4.19`

## Remediation

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