Division by Zero Vulnerability in Linux Kernel Affecting Watchdog RTD119X

CVE-2026-98409

What is CVE-2026-98409?

A division by zero vulnerability exists within the Linux kernel related to the watchdog driver for the RTD119X chipset. This issue arises when the function clk_get_rate() returns a value of zero, which can lead to a panic situation due to an attempted division by zero. Resolved to ensure system stability, this flaw underscores the importance of robust error handling in device drivers to enhance kernel resilience and prevent system crashes.

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