CVE-2023-53084 drm/shmem-helper: Remove another 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-2023-53084?
CVE-2023-53084 is a high-severity use after free vulnerability in Linux kernel, published on 2 May 2025. 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 another errant put in error path
drm_gem_shmem_mmap() doesn't own reference in error code path, resulting in the dma-buf shmem GEM object getting prematurely freed leading to a later use-after-free.
Weakness: CWE-416
Which versions are affected by CVE-2023-53084?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53084?
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-2023-53084 being exploited?
There is no known exploitation of CVE-2023-53084 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53084, DEBIAN-CVE-2023-53084, GHSA-f85v-8gvj-9xjf, UBUNTU-CVE-2023-53084.