Division by Zero Vulnerability in Linux Kernel's Watchdog Component

CVE-2026-98408

What is CVE-2026-98408?

A vulnerability in the Linux kernel's watchdog module could lead to a division by zero error, caused by the clk_get_rate() function returning a zero value. This issue has been addressed to prevent potential panic situations that could arise from such errors, ensuring improved stability and security for systems utilizing the Linux kernel. Proper handling of clock rates is essential to maintain the functionality of dependent processes and avoid unexpected system behavior.

References