CVE-2023-52631

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

02/04/2024

Last modified:

08/04/2025

Description

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix an NULL dereference bug The issue here is when this is called from ntfs_load_attr_list(). The "size" comes from le32_to_cpu(attr->res.data_size) so it can&#39;t overflow on a 64bit systems but on 32bit systems the "+ 1023" can overflow and the result is zero. This means that the kmalloc will succeed by returning the ZERO_SIZE_PTR and then the memcpy() will crash with an Oops on the next line.

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::::::::	5.15 (including)	5.15.149 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.78 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.17 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.7.5 (excluding)
cpe:2.3:o:linux:linux_kernel:6.8:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.8:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.8:rc3::::::

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

CVE-2023-52631

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools