CVE-2026-43049 HID: logitech-hidpp: Prevent use-after-free on force feedback initialisation failure
A use-after-free vulnerability in the Linux kernel Logitech HID driver allows local attackers to execute code or escalate privileges via a specific device initialization failure.
- 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-2026-43049?
CVE-2026-43049 is a high-severity use after free vulnerability in Linux kernel, published on 1 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: logitech-hidpp: Prevent use-after-free on force feedback initialisation failure
Presently, if the force feedback initialisation fails when probing the Logitech G920 Driving Force Racing Wheel for Xbox One, an error number will be returned and propagated before the userspace infrastructure (sysfs and /dev/input) has been torn down. If userspace ignores the errors and continues to use its references to these dangling entities, a UAF will promptly follow.
We have 2 options; continue to return the error, but ensure that all of the infrastructure is torn down accordingly or continue to treat this condition as a warning by emitting the message but returning success. It is thought that the original author's intention was to emit the warning but keep the device functional, less the force feedback feature, so let's go with that.
Weakness: CWE-416
Which versions are affected by CVE-2026-43049?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43049?
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-2026-43049 being exploited?
There is no known exploitation of CVE-2026-43049 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as A-482992246, ASB-A-482992246, AZL-85371, BELL-CVE-2026-43049, DEBIAN-CVE-2026-43049, GHSA-249v-wmcw-xvgm and 5 more.