CVE-2022-49336 drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem
A use-after-free vulnerability in the etnaviv GPU driver allows attackers to corrupt data structures, potentially leading to code execution or system crashes.
- 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-2022-49336?
CVE-2022-49336 is a high-severity use after free vulnerability in Linux kernel, published on 26 Feb 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/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem
When the mapping is already reaped the unmap must be a no-op, as we would otherwise try to remove the mapping twice, corrupting the involved data structures.
Which versions are affected by CVE-2022-49336?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49336?
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-2022-49336 being exploited?
There is no known exploitation of CVE-2022-49336 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49336, GHSA-f8rf-4vgq-5fvw, UBUNTU-CVE-2022-49336.