---
id: CVE-2026-74330
title: 'configfs: fix lockless traversals of ->s_children'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  configfs: fix lockless traversals of ->s_children

  Having the parent directory locked protects entries from removal
  by another thread, but it does *not* protect cursors…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    77fd6f50f633a52c2db061e7d71d8cb486b0265e
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    91f289728ec706b7ff1ca0ee845dd73ff2253488
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    9e57e2863872e82e7c7237bc32299f67ebebc543
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    459860529c109c5ce08b81c0776ca1200eaaeb4a
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    637ef4961470e04455102b34ac484a34d8eca0a4
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    e6d93108e0a27d7e6f95c7e45017d14ba2900d32
  - >-
    Linux >= 6f61076406251626be39651d114fac412b1e0c39 <
    9b9e8bb81c41fd27e7b57a1c936fde140548535f
  - Linux 2.6.27
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T18:53:38.426729Z'
published: '2026-08-15'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T18:55:33.381Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-74330'
references:
  - url: 'https://git.kernel.org/stable/c/77fd6f50f633a52c2db061e7d71d8cb486b0265e'
  - url: 'https://git.kernel.org/stable/c/91f289728ec706b7ff1ca0ee845dd73ff2253488'
  - url: 'https://git.kernel.org/stable/c/b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb'
  - url: 'https://git.kernel.org/stable/c/9e57e2863872e82e7c7237bc32299f67ebebc543'
  - url: 'https://git.kernel.org/stable/c/459860529c109c5ce08b81c0776ca1200eaaeb4a'
  - url: 'https://git.kernel.org/stable/c/637ef4961470e04455102b34ac484a34d8eca0a4'
  - url: 'https://git.kernel.org/stable/c/e6d93108e0a27d7e6f95c7e45017d14ba2900d32'
  - url: 'https://git.kernel.org/stable/c/9b9e8bb81c41fd27e7b57a1c936fde140548535f'
tags:
  - cve.org
epss: 0.00129
epssPercentile: 0.0228
ingestedAt: '2026-10-16T19:46:24.379Z'
---

## Overview

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

configfs: fix lockless traversals of ->s_children

Having the parent directory locked protects entries from removal
by another thread, but it does *not* protect cursors from being
moved around by lseek() - or freed, for that matter.

## Affected

- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < 77fd6f50f633a52c2db061e7d71d8cb486b0265e`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < 91f289728ec706b7ff1ca0ee845dd73ff2253488`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < b166ab78dc3f48e83d2c80bdfde4159b31fdc5fb`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < 9e57e2863872e82e7c7237bc32299f67ebebc543`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < 459860529c109c5ce08b81c0776ca1200eaaeb4a`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < 637ef4961470e04455102b34ac484a34d8eca0a4`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < e6d93108e0a27d7e6f95c7e45017d14ba2900d32`
- `Linux >= 6f61076406251626be39651d114fac412b1e0c39 < 9b9e8bb81c41fd27e7b57a1c936fde140548535f`
- `Linux 2.6.27`

## Remediation

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