CVE-2026-98410 watchdog: da9063: fix suspend/resume handling of HW_RUNNING watchdog
A flaw in the Linux kernel da9063 watchdog driver causes unexpected system resets during suspend due to improper state handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98410?
CVE-2026-98410 is a denial of service vulnerability in Linux, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
watchdog: da9063: fix suspend/resume handling of HW_RUNNING watchdog
da9063_wdt_suspend() and da9063_wdt_resume() only check watchdog_active(), when the watchdog is left running by the driver sets WDOG_HW_RUNNING in da9063_wdt_probe() but userspace never opens the device, so WDOG_ACTIVE remains cleared, the wdt_disable() will not be executed in da9063_wdt_suspend. In this case, the suspend callback is a no-op and the watchdog keeps counting during system suspend, leading to an unexpected system reset. Check WDOG_HW_RUNNING and wdd，can fix this issue.
Which versions are affected by CVE-2026-98410?
How do I fix CVE-2026-98410?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-98410 being exploited?
There is no known exploitation of CVE-2026-98410 in the wild and no public exploit code.
Sources
Also known as AZL-108182, BELL-CVE-2026-98410, DEBIAN-CVE-2026-98410, GHSA-v9jm-64rh-hf94, UBUNTU-CVE-2026-98410.