CVE-2026-98672 iio: adc: stm32-adc: fix possible division by zero in processed channel
A division by zero in the STM32 ADC driver can cause a kernel crash, leading to denial of service for local attackers.
- 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-2026-98672?
CVE-2026-98672 is a denial of service vulnerability in Linux, published on 18 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:
iio: adc: stm32-adc: fix possible division by zero in processed channel
In case the conversion has failed or returned zero, processing *val can lead to a division by zero. Need to check for errors, or converted value is zero, before processing the data. In case the converted value is zero, e.g. the Vrefint channel, this should be considered as invalid in all cases.
Which versions are affected by CVE-2026-98672?
How do I fix CVE-2026-98672?
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-2026-98672 being exploited?
There is no known exploitation of CVE-2026-98672 in the wild and no public exploit code.
Sources
Also known as AZL-109221, BELL-CVE-2026-98672, DEBIAN-CVE-2026-98672, GHSA-94qq-vvm2-wwhc, UBUNTU-CVE-2026-98672.