CVE-2026-93188 HID: roccat: bound device-supplied profile index
A malicious USB device can trigger an out-of-bounds read in the Linux kernel Roccat driver, exposing memory contents via sysfs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-93188?
CVE-2026-93188 is a memory corruption vulnerability in Linux, published on 17 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
In the Linux kernel, the following vulnerability has been resolved:
HID: roccat: bound device-supplied profile index
kone_keep_values_up_to_date() and kone_profile_activated() use an 8-bit, device-supplied profile value as an index into the 5-element kone->profiles[] array without a range check. A malicious USB device claiming the Roccat Kone id can send a switch-profile event (or a startup_profile read at probe) with an out-of-range value and make the driver read out of bounds; the result is exposed via the actual_dpi sysfs attribute.
Reject out-of-range indices in both paths.
This was found with static analysis and confirmed with the KUnit test added in the following patch (KASAN: slab-out-of-bounds).
Which versions are affected by CVE-2026-93188?
How do I fix CVE-2026-93188?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-93188 being exploited?
There is no known exploitation of CVE-2026-93188 in the wild and no public exploit code.
Sources
Also known as AZL-102762, BELL-CVE-2026-93188, DEBIAN-CVE-2026-93188, GHSA-vx3m-3j77-8829, UBUNTU-CVE-2026-93188.