CVE-2022-50856

kernel: cifs: Fix xid leak in cifs_ses_add_channel()

Loading…

Severity

Low

Red Hat Product Security

3.3

CVSS 3.1

Review impact separately from score.

Published · December 30, 2025

Updated · July 22, 2026

Description

A transaction ID (xid) leak was found in the CIFS/SMB filesystem. When adding a new channel fails, the allocated xid is not freed, leading to gradual exhaustion of the xid pool.

Statement

This is a minor resource leak in CIFS multichannel operations. The xid pool is limited but typically large enough that exhaustion would require many repeated failures over an extended period.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.3
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE-772 · Missing Release of Resource after Effective Lifetime