CVE-2026-68356

kernel: watchdog: airoha: Prevent division by zero when clock frequency is zero

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 10, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's airoha watchdog driver. This vulnerability occurs when the clock frequency is zero, causing the driver to attempt a division by zero. This can lead to a system crash, resulting in a denial of service for the affected system.

Statement

This issue affects Airoha watchdog. clk_get_rate() returning 0 causes division by zero. Airoha SoC platforms only.

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-369 · Divide By Zero