CVE-2024-49991 drm/amdkfd: amdkfd_free_gtt_mem clear the correct pointer
A use-after-free vulnerability in the Linux kernel's amdkfd 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-2024-49991?
CVE-2024-49991 is a high-severity use after free vulnerability in Debian Debian Linux, 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/amdkfd: amdkfd_free_gtt_mem clear the correct pointer
Pass pointer reference to amdgpu_bo_unref to clear the correct pointer, otherwise amdgpu_bo_unref clear the local variable, the original pointer not set to NULL, this could cause use-after-free bug.
Weakness: CWE-416
Which versions are affected by CVE-2024-49991?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2024-49991?
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-2024-49991 being exploited?
There is no known exploitation of CVE-2024-49991 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-51756, BELL-CVE-2024-49991, DEBIAN-CVE-2024-49991, GHSA-gj49-2hq5-g5h7, ROOT-OS-DEBIAN-11-CVE-2024-49991, ROOT-OS-UBUNTU-2204-CVE-2024-49991 and 1 more.