CVE-2026-98409: watchdog: rtd119x: Avoid division by zero
In the Linux kernel, the following vulnerability has been resolved:
watchdog: rtd119x: Avoid division by zero
clkgetrate() could return 0. Avoid a division by zero panic.
Affected Software
Event History
Frequently Asked Questions
What systems are exposed to this issue?
Systems running the Linux kernel with the rtd119x watchdog driver are exposed when the driver reaches code that divides by the rate returned from clk_get_rate(). The issue can cause a kernel panic if that clock rate is zero.
What condition is required to trigger the failure?
The clock rate returned by clk_get_rate() must be zero. The provided information does not identify an external attacker-controlled input or any required privileges.
How can I determine whether a system may be affected?
Check whether the running kernel uses the rtd119x watchdog driver and whether it includes one of the referenced stable fixes. A division-by-zero kernel panic associated with this driver is an indicator of exposure.