CVE-2022-48899 drm/virtio: Fix GEM handle creation UAF
A race condition in the Linux kernel's virtio DRM driver allows local attackers to trigger a use-after-free, potentially leading to code execution or privilege escalation.
- 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-2022-48899?
CVE-2022-48899 is a high-severity use after free vulnerability in Linux kernel, published on 21 Aug 2024. 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:
drm/virtio: Fix GEM handle creation UAF
Userspace can guess the handle value and try to race GEM object creation with handle close, resulting in a use-after-free if we dereference the object after dropping the handle's reference. For that reason, dropping the handle's reference must be done *after* we are done dereferencing the object.
Weakness: CWE-416
Which versions are affected by CVE-2022-48899?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48899?
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-2022-48899 being exploited?
There is no known exploitation of CVE-2022-48899 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48899, GHSA-wg5x-3j3h-vr62, UBUNTU-CVE-2022-48899.