CVE-2026-80567 Input: synaptics-rmi4 - propagate F54 worker errors to V4L2 queue
A local attacker can read uninitialized kernel memory via the Synaptics RMI4 driver due to ignored worker errors, potentially exposing sensitive data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80567?
CVE-2026-80567 is a vulnerability in Linux, published on 26 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:
Input: synaptics-rmi4 - propagate F54 worker errors to V4L2 queue
Previously, rmi_f54_buffer_queue() waited for the worker thread to finish but ignored whether it succeeded. If the worker failed (e.g., due to a timeout or register read failure), the queue thread would silently return success, delivering stale or uninitialized memory to userspace.
Add a 'report_error' field to struct f54_data to store the worker's exit status. Check this field in rmi_f54_buffer_queue() after the worker finishes, and mark the buffer as VB2_BUF_STATE_ERROR if an error occurred.
Which versions are affected by CVE-2026-80567?
How do I fix CVE-2026-80567?
Apply the vendor's patch.
Is CVE-2026-80567 being exploited?
There is no known exploitation of CVE-2026-80567 in the wild and no public exploit code.
Sources
Also known as AZL-97805, BELL-CVE-2026-80567, DEBIAN-CVE-2026-80567, UBUNTU-CVE-2026-80567.