CVE-2024-43828

MEDIUM EPSS 13.8%
Published Aug 17, 20241y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Aug 17, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

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!

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
13.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-835

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥5.10  –  <5.10.224
linuxlinux_kernel*≥5.11  –  <5.15.165
linuxlinux_kernel*≥5.16  –  <6.1.103
linuxlinux_kernel*≥6.2  –  <6.6.44
linuxlinux_kernel*≥6.7  –  <6.10.3

References 9

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-265688.html
  • git.kernel.org https://git.kernel.org/stable/c/0619f7750f2b178a1309808832ab20d85e0ad121
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539c
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0619f7750f2b178a1309808832ab20d85e0ad121
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/181e63cd595c688194e07332f9944b3a63193de2
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/5ed0496e383cb6de120e56991385dce70bbb87c1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/81f819c537d29932e4b9267f02411cbc8b355178
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/907c3fe532253a6ef4eb9c4d67efb71fab58c706
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c6e67df64783e99a657ef2b8c834ba2bf54c539c
    Patch