CVE-2026-68359 hwmon: (nzxt-smart2) Stop device IO before calling hid_hw_stop
A race condition in the nzxt-smart2 kernel driver allows local attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.
- 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-2026-68359?
CVE-2026-68359 is an use after free vulnerability in Linux, published on 10 Aug 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:
hwmon: (nzxt-smart2) Stop device IO before calling hid_hw_stop
Calling hid_hw_stop() does not stop the device IO. This results in a race condition between hid_input_report() and the point immediately following the execution of hid_device_io_start() within the driver probe function. If the probe operation fails after "io start" has been initiated, this race condition will result in a UAF vulnerability.
Fix the problem by calling hid_device_io_stop() before calling hid_hw_stop().
Which versions are affected by CVE-2026-68359?
How do I fix CVE-2026-68359?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-68359 being exploited?
There is no known exploitation of CVE-2026-68359 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-68359, DEBIAN-CVE-2026-68359, GHSA-g646-6rxh-xh86, UBUNTU-CVE-2026-68359.