CVE-2025-39943

Severity CVSS v4.0:

Pending analysis

Type:

CWE-125 Out-of-bounds Read

Publication date:

04/10/2025

Last modified:

27/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.

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::::::::	5.15.1 (including)	5.15.194 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.154 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.6.108 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.7 (including)	6.12.49 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13 (including)	6.16.9 (excluding)
cpe:2.3:o:linux:linux_kernel:5.15:-::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc7::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc5::::::
cpe:2.3:o:linux:linux_kernel:6.17:rc6::::::

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

CVE-2025-39943

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools