CVE-2025-21946

Severity CVSS v4.0:

Pending analysis

Type:

CWE-125 Out-of-bounds Read

Publication date:

01/04/2025

Last modified:

11/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix out-of-bounds in parse_sec_desc() If osidoffset, gsidoffset and dacloffset could be greater than smb_ntsd struct size. If it is smaller, It could cause slab-out-of-bounds. And when validating sid, It need to check it included subauth array size.

Impact

Vector 3.x

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

Base Score: 7.10 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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): High
Integrity (I): None
Availability (A): High

Base Score 3.x

7.10

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:o:linux:linux_kernel::::::::	5.15 (including)	6.6.83 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.19 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.13.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.14:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.14:rc5::::::

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

CVE-2025-21946

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools