CVE-2024-35876

kernel: x86/mce: Make sure to grab mce_sysfs_mutex in set_bank()

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Severity

Low

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · May 19, 2024

Updated · October 31, 2026

Description

A flaw was found in the Linux kernel's x86 Machine Check Exception (MCE) subsystem. A local user with administrative privileges could trigger a race condition by concurrently modifying Machine Check Architecture (MCA) bank configuration attributes through the sysfs interface. This issue occurs because the set_bank() function fails to acquire the appropriate mutex lock before reinitializing active timers, which can lead to a system crash and a Denial of Service (DoS).

Statement

This CVE has been marked as Rejected by the assigning CNA.

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 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-413 · Improper Resource Locking