CVE-2023-53091

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 36/100
Published: 2025-05-02 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: None
I: None
A: High

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.

Weakness Classification (1)

Affected Software (16)

VendorProductVersion
Linux Linux 345c0dbf3a30872d9b204db96b5857cd00808cae < 499fef2030fb754c68b1c7cb3a799a3bc1d0d925
Linux Linux 345c0dbf3a30872d9b204db96b5857cd00808cae < 70e66bdeae4d0f7c8e87762f425b68aedd5e8955
Linux Linux 345c0dbf3a30872d9b204db96b5857cd00808cae < ee0c5277d4fab920bd31345c49e193ecede9ecef
Linux Linux 345c0dbf3a30872d9b204db96b5857cd00808cae < 3039d8b8692408438a618fac2776b629852663c3
Linux Linux 51890201da4d654f6ca131bc45a0e892bb10de1d
Linux Linux 7eff961ca9f364be255d279346517ba0158ec8e3
Linux Linux a9855260fe8d8680bf8c4f0d8303b696c861e99b
Linux Linux 795762468125a6412c089651e74f780bee154118
Linux Linux 2fd4629de51974002f4e9cf1a35a1926dd6c9d99
Linux Linux 3.16.85 < 3.17
Linux Linux 4.4.221 < 4.5
Linux Linux 4.9.221 < 4.10
Linux Linux 4.14.178 < 4.15
Linux Linux 4.19.73 < 4.20
Linux Linux 5.2
linux linux_kernel < 5.15.104

Bug Bounty Relevance

36 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.21%
Raw Score 0.002150
Percentile 12.0%
Date 2026-11-06

EPSS Trend

2026-11-06
0.00215
2026-11-05
0.00215

Intelligence Sources

mitre ref →
nvd ref →