CVE-2026-98409

Received Received - Intake

Watchdog Division by Zero in Linux Kernel RTD119x

Publication date: 2026-10-14

Last updated on: 2026-10-19

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: watchdog: rtd119x: Avoid division by zero clk_get_rate() could return 0. Avoid a division by zero panic.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-14

Last Modified

2026-10-19

Generated

2026-10-19

AI Q&A

2026-10-15

EPSS Evaluated

2026-10-18

NVD

CVE-2026-98409

EUVD

EUVD-2026-101058

Affected Vendors & Products

Vendor	Product	Version / Range
Linux	Linux	2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367
Linux	Linux	2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367
Linux	Linux	2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367
Linux	Linux	2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367
Linux	Linux	2bdf6acbfead7e9aa69f36ee5682d1e5c8f70367
Linux	Linux	4.16

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is in the Linux kernel's watchdog driver for RTD119x devices. It occurs when clk_get_rate() returns zero, which could lead to a division by zero panic in the kernel.

Detection Guidance

This vulnerability involves a potential division by zero in the watchdog driver for RTD119x systems. Detection requires checking the kernel version and watchdog driver behavior. Inspect the kernel log for division by zero errors or watchdog timeouts. Use commands like dmesg | grep -i 'division by zero' or dmesg | grep -i 'watchdog' to check for related issues.

Impact Analysis

This could cause a system crash or kernel panic if the affected watchdog driver is used on an RTD119x-based system. This may result in denial of service for the device.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It is a low-severity issue in the Linux kernel watchdog driver that could cause a system crash due to a division by zero. No data exposure or privacy impact is indicated.

Mitigation Strategies

Update the Linux kernel to a patched version that resolves the watchdog division by zero issue in the rtd119x driver.

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