CVE-2023-53450

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/10/2025

Last modified:

23/01/2026

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&#39;t crash the kernel.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	2.6.25 (including)	4.14.315 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.283 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.243 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.180 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.112 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.29 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.2.16 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.3 (including)	6.3.3 (excluding)
cpe:2.3:o:linux:linux_kernel:6.4:rc1::::::

To consult the complete list of CPE names with products and versions, see this page

CVE-2023-53450

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools