CVE-2023-53450

MEDIUM EPSS 4.6%
Published Oct 1, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: remove a BUG_ON in ext4_mb_release_group_pa() If a malicious fuzzer overwrites the ext4 superblock while it is mounted such that the s_first_data_block is set to a very large number, the calculation of the block group can underflow, and trigger a BUG_ON check. Change this to be an ext4_warning so that we don't crash the kernel.

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
4.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-617

Affected Products 9

VendorProductVersionRange
linuxlinux_kernel*≥2.6.25  –  <4.14.315
linuxlinux_kernel*≥4.15  –  <4.19.283
linuxlinux_kernel*≥4.20  –  <5.4.243
linuxlinux_kernel*≥5.5  –  <5.10.180
linuxlinux_kernel*≥5.11  –  <5.15.112
linuxlinux_kernel*≥5.16  –  <6.1.29
linuxlinux_kernel*≥6.2  –  <6.2.16
linuxlinux_kernel*≥6.3  –  <6.3.3
linuxlinux_kernel6.4any

References 9

  • git.kernel.org https://git.kernel.org/stable/c/185062a21976fbc38f2efd296951b02c4500cf65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/463808f237cf73e98a1a45ff7460c2406a150a0b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/53c14e7cc2257191ba15425c15638fc4f8abb92b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/978e5e9111af18741449b81fefd531a622dd969a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b0fc279de4bf17e1710bb7e83906538ff8f11111
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf2a16eb4e6d06124bd8436d4546f61539a65f29
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d87a4e4094c9879fc8acdff8ce59fdffa979c8e0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ef16d8a1798db1a1604ac44ca1bd73ec6bebf483
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/185062a21976fbc38f2efd296951b02c4500cf65
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/463808f237cf73e98a1a45ff7460c2406a150a0b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/53c14e7cc2257191ba15425c15638fc4f8abb92b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/978e5e9111af18741449b81fefd531a622dd969a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b0fc279de4bf17e1710bb7e83906538ff8f11111
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/bf2a16eb4e6d06124bd8436d4546f61539a65f29
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d5bf8f7fb3ee3d99d1303ceb54599ea0599a4a5b
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d87a4e4094c9879fc8acdff8ce59fdffa979c8e0
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ef16d8a1798db1a1604ac44ca1bd73ec6bebf483
    Patch