CVEvulnerability

CVE-2025-71150

5.5 MEDIUM Published 2026-01-23 Modified 2026-07-30 Official page ↗
Status
Modified
Published
2026-01-23
Last modified
2026-07-30
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Affected configurations

• linux linux kernel (>= 5.15.176 < 5.16) • linux linux kernel (>= 6.1.121 < 6.1.160) • linux linux kernel (>= 6.6.67 < 6.6.120) • linux linux kernel (>= 6.12.6 < 6.12.64) • linux linux kernel (>= 6.13.1 < 6.18.3) • linux linux kernel 6.13 • linux linux kernel 6.19

References