---
id: CVE-2022-1184
title: >-
  A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the
  Linux kernel’s filesystem sub-component
summary: >-
  A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the
  Linux kernel’s filesystem sub-component. This flaw allows a local attacker
  with a user privilege to cause a denial of service.
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-416
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel > 2.6.12, < 4.9.138'
  - 'linux_kernel > 4.14, < 4.14.283'
  - 'linux_kernel > 4.19, < 4.19.247'
  - 'linux_kernel > 5.4, < 5.4.198'
  - 'linux_kernel > 5.10, < 5.10.121'
  - 'linux_kernel > 5.15, < 5.15.46'
  - 'linux_kernel > 5.17, < 5.17.14'
  - 'linux_kernel > 5.18, < 5.18.3'
  - linux_kernel = 2.6.12
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
  - debian_linux = 10.0
  - debian_linux = 11.0
  - ubuntu_linux = 14.04
  - ubuntu_linux = 16.04
  - ubuntu_linux = 18.04
  - ubuntu_linux = 20.04
patched:
  - linux_kernel 5.18.3
published: '2022-08-29'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:17:17.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-1184'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2022-1184'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2070205'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html'
    label: secalert@redhat.com
  - url: 'https://ubuntu.com/security/CVE-2022-1184'
    label: secalert@redhat.com
  - url: 'https://www.debian.org/security/2022/dsa-5257'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2022-1184'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2070205'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://ubuntu.com/security/CVE-2022-1184'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2022/dsa-5257'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
epss: 0.00289
epssPercentile: 0.19875
ingestedAt: '2026-10-14T13:30:58.418Z'
---

## Overview

A use-after-free flaw was found in fs/ext4/namei.c:dx_insert_block() in the Linux kernel’s filesystem sub-component. This flaw allows a local attacker with a user privilege to cause a denial of service.

## Affected

- `linux_kernel > 2.6.12, < 4.9.138`
- `linux_kernel > 4.14, < 4.14.283`
- `linux_kernel > 4.19, < 4.19.247`
- `linux_kernel > 5.4, < 5.4.198`
- `linux_kernel > 5.10, < 5.10.121`
- `linux_kernel > 5.15, < 5.15.46`
- `linux_kernel > 5.17, < 5.17.14`
- `linux_kernel > 5.18, < 5.18.3`
- `linux_kernel = 2.6.12`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`
- `debian_linux = 10.0`
- `debian_linux = 11.0`
- `ubuntu_linux = 14.04`
- `ubuntu_linux = 16.04`
- `ubuntu_linux = 18.04`
- `ubuntu_linux = 20.04`

## Remediation

Upgrade past the affected range:

- `linux_kernel 5.18.3`