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CVE-2026-74442

kernel: drm/vmwgfx: avoid destroy_workqueue(NULL) on vkms init failure

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 15, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's drm/vmwgfx driver. This vulnerability occurs when the vmw_vkms_init() function fails to initialize a workqueue, leaving a pointer as NULL. During module unload, the vmw_vkms_cleanup() function attempts to destroy this NULL workqueue, leading to a kernel panic. A local attacker could potentially trigger this condition, resulting in a system crash and a Denial of Service (DoS).

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference