CVE-2025-21797 HID: corsair-void: Add missing delayed work cancel for headset status
A missing delayed work cancellation in the Corsair Void HID driver causes a use-after-free, potentially allowing 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-2025-21797?
CVE-2025-21797 is a high-severity use after free vulnerability in Linux kernel, published on 27 Feb 2025. 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: corsair-void: Add missing delayed work cancel for headset status
The cancel_delayed_work_sync() call was missed, causing a use-after-free in corsair_void_remove().
Weakness: CWE-416
Which versions are affected by CVE-2025-21797?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-21797?
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-2025-21797 being exploited?
There is no known exploitation of CVE-2025-21797 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-21797, GHSA-wqgg-8638-f2vf, UBUNTU-CVE-2025-21797.