CVE-2026-80769 HID: rapoo: fix missing hid_is_usb() check
A missing check in the Linux kernel HID rapoo driver allows local attackers to trigger a kernel crash via uhid devices.
- 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-2026-80769?
CVE-2026-80769 is a vulnerability in Linux, published on 4 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: rapoo: fix missing hid_is_usb() check
to_usb_interface() can only be used on a hid_device whose parent is really USB; uhid can create devices that identify as being on BUS_USB, but don't actually have a USB parent. Fix the use of to_usb_interface() without a hid_is_usb() check.
Add a dependency on USB_HID for hid_is_usb(), as other HID drivers do; the alternative would be to provide a simple stub implementation on !USB_HID builds.
I have verified that it is currently possible to trigger a kernel splat due to this bug in an ASAN build, and that this commit fixes the issue.
Which versions are affected by CVE-2026-80769?
How do I fix CVE-2026-80769?
Apply the vendor's patch.
Is CVE-2026-80769 being exploited?
There is no known exploitation of CVE-2026-80769 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-80769, GHSA-cqwg-p2fx-632h, UBUNTU-CVE-2026-80769.