CVE-2025-71150

high

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.

References

https://git.kernel.org/stable/c/e54fb2a4772545701766cba08aab20de5eace8cd

https://git.kernel.org/stable/c/cafb57f7bdd57abba87725eb4e82bbdca4959644

https://git.kernel.org/stable/c/8cabcb4dd3dc85dd83a37d26efcc59a66a4074d7

https://git.kernel.org/stable/c/0fb87b28cafae71e9c8248432cc3a6a1fd759efc

https://git.kernel.org/stable/c/02e06785e85b4bd86ef3d23b7c8d87acc76773d5

Details

Source: Mitre, NVD

Published: 2026-01-23

Updated: 2026-01-23

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High

EPSS

EPSS: 0.00018