CVE-2025-71150

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

23/01/2026

Last modified:

26/02/2026

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix refcount leak when invalid session is found on session lookup When a session is found but its state is not SMB2_SESSION_VALID, It indicates that no valid session was found, but it is missing to decrement the reference count acquired by the session lookup, which results in a reference count leak. This patch fixes the issue by explicitly calling ksmbd_user_session_put to release the reference to the session.

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::::::::	5.15.176 (including)	5.16 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.1.121 (including)	6.1.160 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.6.67 (including)	6.6.120 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.12.6 (including)	6.12.64 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.13.1 (including)	6.18.3 (excluding)
cpe:2.3:o:linux:linux_kernel:6.13:-::::::
cpe:2.3:o:linux:linux_kernel:6.13:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.13:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.13:rc5::::::
cpe:2.3:o:linux:linux_kernel:6.13:rc6::::::
cpe:2.3:o:linux:linux_kernel:6.13:rc7::::::
cpe:2.3:o:linux:linux_kernel:6.19:rc1::::::

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

CVE-2025-71150

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools