CVE-2026-31618

kernel: fbdev: tdfxfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · April 24, 2026

Updated · June 28, 2026

Description

A flaw was found in the Linux kernel's fbdev subsystem, specifically affecting the tdfxfb and udlfb drivers. This vulnerability allows a local attacker to trigger a divide-by-zero error when performing the FBIOPUT_VSCREENINFO operation. This can lead to a system crash, resulting in a Denial of Service (DoS) for the affected system.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-369 · Divide By Zero