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CVE-2026-97970

kernel: watchdog: msc313e: Avoid division by zero

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 25, 2026

Updated · September 30, 2026

Description

A flaw was found in the Linux kernel's MSC313e watchdog driver. A local user or an unconfigured clock condition during device initialization can cause the driver to encounter a zero clock rate. Because the driver fails to validate this value before using it in a division operation, a division-by-zero error occurs, triggering a kernel panic and 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-369 · Divide By Zero