CVE-2023-52804

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

21/05/2024

Last modified:

23/09/2025

Description

In the Linux kernel, the following vulnerability has been resolved: fs/jfs: Add validity check for db_maxag and db_agpref Both db_maxag and db_agpref are used as the index of the db_agfree array, but there is currently no validity check for db_maxag and db_agpref, which can lead to errors. The following is related bug reported by Syzbot: UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:639:20 index 7936 is out of range for type &#39;atomic_t[128]&#39; Add checking that the values of db_maxag and db_agpref are valid indexes for the db_agfree array.

Impact

Vector 3.x

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x

7.80

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::		4.14.331 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.300 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.262 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.202 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.140 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.64 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.5.13 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6 (including)	6.6.3 (excluding)

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

CVE-2023-52804

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools