CVE-2022-0646

kernel: uaf bug in mctp-serial.c

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Severity

Moderate

Red Hat Product Security

6.4

CVSS 3.1

Review impact separately from score.

Published · February 16, 2022

Updated · November 22, 2025

Description

A use-after-free flaw was found in the Linux kernel’s Management Component Transport Protocol (MCTP) subsystem in the way a user triggers cancel_work_sync after the unregister_netdev during the removal of the device. This flaw allows a local user to crash or escalate their privileges on the system.

Statement

There was no shipped kernel version that was seen affected by this problem.

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 · 6.4
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CWE-459 · Incomplete Cleanup