CVE-2026-90101 bnxt_en: Fix call to hardware monitoring event handler
A bug in the bnxt_en network driver passes the wrong device pointer to a hardware monitoring function, potentially causing a kernel crash.
- 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-2026-90101?
CVE-2026-90101 is a vulnerability in Linux, published on 17 Sep 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:
bnxt_en: Fix call to hardware monitoring event handler
The first parameter of hwmon_notify_event() is supposed to be the hardware monitoring device. The bnxt driver calls it with the platform device as first parameter instead. This API break results in undefined behavior and may result in a crash.
Pass the hardware monitoring device as parameter instead to fix the problem.
Which versions are affected by CVE-2026-90101?
How do I fix CVE-2026-90101?
Apply the vendor's patch.
Is CVE-2026-90101 being exploited?
There is no known exploitation of CVE-2026-90101 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-90101, DEBIAN-CVE-2026-90101, GHSA-vwp5-jm9v-mqjg, UBUNTU-CVE-2026-90101.