CVE-2023-53091

MEDIUM EPSS 6.8%
Published May 2, 20251y ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published May 2, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: update s_journal_inum if it changes after journal replay When mounting a crafted ext4 image, s_journal_inum may change after journal replay, which is obviously unreasonable because we have successfully loaded and replayed the journal through the old s_journal_inum. And the new s_journal_inum bypasses some of the checks in ext4_get_journal(), which may trigger a null pointer dereference problem. So if s_journal_inum changes after the journal replay, we ignore the change, and rewrite the current journal_inum to the superblock.

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
6.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 3

VendorProductVersionRange
linuxlinux_kernel* <5.15.104
linuxlinux_kernel*≥5.16  –  <6.1.21
linuxlinux_kernel*≥6.2  –  <6.2.8

References 4

  • git.kernel.org https://git.kernel.org/stable/c/3039d8b8692408438a618fac2776b629852663c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/3039d8b8692408438a618fac2776b629852663c3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef
    Patch