CVE-2026-90329 HID: synchronize input before cleaning up a failed probe
A use-after-free in the Linux kernel HID subsystem allows attackers to execute arbitrary code or escalate privileges via race conditions during failed device probes.
- 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-2026-90329?
CVE-2026-90329 is a high-severity use after free 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:
HID: synchronize input before cleaning up a failed probe
hid_device_io_start() allows reports to run concurrently with probe. If the probe subsequently fails, __hid_device_probe() releases driver resources and clears hdev->driver without first excluding those report callbacks.
For example, a report may enter hidraw_report_event() while the failure path frees the associated hidraw object, leading to a use-after-free when the report takes the object's list lock.
Stop input before performing failed-probe cleanup. This reacquires driver_input_lock and waits for any report callback already in progress.
Which versions are affected by CVE-2026-90329?
How do I fix CVE-2026-90329?
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-2026-90329 being exploited?
There is no known exploitation of CVE-2026-90329 in the wild and no public exploit code.
Sources
Also known as AZL-101969, BELL-CVE-2026-90329, DEBIAN-CVE-2026-90329, GHSA-94w3-hvfp-6j85, UBUNTU-CVE-2026-90329.