CVE-2023-52921 drm/amdgpu: fix possible UAF in amdgpu_cs_pass1()
A use-after-free vulnerability in the Linux kernel's amdgpu driver allows attackers to potentially execute arbitrary 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-2023-52921?
CVE-2023-52921 is a high-severity use after free vulnerability in Linux kernel, published on 19 Nov 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/amdgpu: fix possible UAF in amdgpu_cs_pass1()
Since the gang_size check is outside of chunk parsing loop, we need to reset i before we free the chunk data.
Suggested by Ye Zhang (@VAR10CK) of Baidu Security.
Weakness: CWE-416
Which versions are affected by CVE-2023-52921?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-52921?
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-2023-52921 being exploited?
There is no known exploitation of CVE-2023-52921 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-53778, BELL-CVE-2023-52921, DEBIAN-CVE-2023-52921, GHSA-8qh2-vgp4-89x7, ROOT-OS-UBUNTU-2204-CVE-2023-52921, UBUNTU-CVE-2023-52921.