CVE-2026-43111 HID: roccat: fix use-after-free in roccat_report_event
A race condition in the Linux kernel's Roccat HID driver allows a use-after-free, potentially enabling local attackers to execute code or escalate privileges.
- 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-2026-43111?
CVE-2026-43111 is a high-severity use after free vulnerability in Linux kernel, published on 6 May 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: roccat: fix use-after-free in roccat_report_event
roccat_report_event() iterates over the device->readers list without holding the readers_lock. This allows a concurrent roccat_release() to remove and free a reader while it's still being accessed, leading to a use-after-free.
Protect the readers list traversal with the readers_lock mutex.
Which versions are affected by CVE-2026-43111?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43111?
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-2026-43111 being exploited?
There is no known exploitation of CVE-2026-43111 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-43111, DEBIAN-CVE-2026-43111, GHSA-mv3m-x6qp-j4p5, ROOT-OS-DEBIAN-11-CVE-2026-43111, ROOT-OS-DEBIAN-12-CVE-2026-43111, ROOT-OS-UBUNTU-2204-CVE-2026-43111 and 2 more.