PT-2025-18855 · Linux+4 · Linux Kernel+4

Published 2023-02-18 · Updated 2026-03-14 · CVE-2023-53091

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A null pointer dereference problem may occur when mounting a crafted ext4 image. The issue arises because s journal inum may change after journal replay, bypassing checks in ext4 get journal(). To address this, the code now ignores changes to s journal inum after journal replay and rewrites the current journal inum to the superblock.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-03459

CVE-2023-53091

OESA-2025-1541

SUSE-SU-2025:01918-1

SUSE-SU-2025:01966-1

SUSE-SU-2025:02173-1

SUSE-SU-2025:02262-1

SUSE-SU-2025:02334-1

SUSE-SU-2025:2173-1

SUSE-SU-2025_02173-1

SUSE-SU-2025_02262-1

SUSE-SU-2025_02334-1

Affected Products

Astra Linux

Debian

Linux Kernel

Red Os

Suse

References · 704

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53091.json · Exploit
• https://osv.dev/vulnerability/CVE-2023-53091 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-37839 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49846 · Security Note
• https://git.kernel.org/stable/c/ee0c5277d4fab920bd31345c49e193ecede9ecef · Patch
• https://git.kernel.org/stable/c/70e66bdeae4d0f7c8e87762f425b68aedd5e8955 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49832 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2023-53091 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:02334-1 · Vendor Advisory
• https://git.kernel.org/stable/c/499fef2030fb754c68b1c7cb3a799a3bc1d0d925 · Patch
• https://cve.org/CVERecord?id=CVE-2023-53091 · Security Note
• https://git.kernel.org/stable/c/3039d8b8692408438a618fac2776b629852663c3 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-57982 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:02173-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:01966-1 · Vendor Advisory