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CVE-2026-74424

kernel: fbcon: fix NULL pointer dereference for a console without vc_data

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 15, 2026

Updated · August 21, 2026

Description

A flaw was found in the Linux kernel. The fbcon component, responsible for framebuffer console operations, can encounter a NULL pointer dereference. This occurs when fbcon_new_modelist() attempts to access console data (vc_data) that has been freed, leading to a system crash. A local attacker could potentially trigger this issue, resulting in 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