CVE-2022-48981 drm/shmem-helper: Remove errant put in error path
A use-after-free vulnerability in the Linux kernel's DRM shmem helper allows attackers to potentially 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-2022-48981?
CVE-2022-48981 is a high-severity use after free vulnerability in Linux kernel, published on 21 Oct 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/shmem-helper: Remove errant put in error path
drm_gem_shmem_mmap() doesn't own this reference, resulting in the GEM object getting prematurely freed leading to a later use-after-free.
Weakness: CWE-416
Which versions are affected by CVE-2022-48981?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-48981?
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-2022-48981 being exploited?
There is no known exploitation of CVE-2022-48981 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-48981, GHSA-f754-p36j-5c6r, UBUNTU-CVE-2022-48981.