---
id: CVE-2024-43828
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ext4: fix infinite loop when replaying fast_commit

  When doing fast_commit replay an infinite loop may occur due to an
  uninitialized extent_status struct
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  ext4: fix infinite loop when replaying fast_commit

  When doing fast_commit replay an infinite loop may occur due to an
  uninitialized extent_status struct.  ext4_ext_det…
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-835
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 5.10, < 5.10.224'
  - 'linux_kernel >= 5.11, < 5.15.165'
  - 'linux_kernel >= 5.16, < 6.1.103'
  - 'linux_kernel >= 6.2, < 6.6.44'
  - 'linux_kernel >= 6.7, < 6.10.3'
patched:
  - linux_kernel 6.10.3
published: '2024-08-17'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T01:18:47.333'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2024-43828'
references:
  - url: 'https://git.kernel.org/stable/c/0619f7750f2b178a1309808832ab20d85e0ad121'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539c'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - cve.org
epss: 0.00239
epssPercentile: 0.14841
ingestedAt: '2026-10-15T03:30:12.734Z'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2024-09-10T16:08:37.888244Z'
---

## Overview

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

ext4: fix infinite loop when replaying fast_commit

When doing fast_commit replay an infinite loop may occur due to an
uninitialized extent_status struct.  ext4_ext_determine_insert_hole() does
not detect the replay and calls ext4_es_find_extent_range(), which will
return immediately without initializing the 'es' variable.

Because 'es' contains garbage, an integer overflow may happen causing an
infinite loop in this function, easily reproducible using fstest generic/039.

This commit fixes this issue by unconditionally initializing the structure
in function ext4_es_find_extent_range().

Thanks to Zhang Yi, for figuring out the real problem!

## Affected

- `linux_kernel >= 5.10, < 5.10.224`
- `linux_kernel >= 5.11, < 5.15.165`
- `linux_kernel >= 5.16, < 6.1.103`
- `linux_kernel >= 6.2, < 6.6.44`
- `linux_kernel >= 6.7, < 6.10.3`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.10.3`