CVE-2022-49966 drm/amd/pm: add missing ->fini_microcode interface for Sienna Cichlid
A missing cleanup interface in the AMD Sienna Cichlid power management driver causes a memory leak, potentially leading to denial of service.
- 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-2022-49966?
CVE-2022-49966 is a medium-severity memory corruption vulnerability in Linux kernel, published on 18 Jun 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/amd/pm: add missing ->fini_microcode interface for Sienna Cichlid
To avoid any potential memory leak.
Weakness: CWE-401
Which versions are affected by CVE-2022-49966?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49966?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-49966 being exploited?
There is no known exploitation of CVE-2022-49966 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49966, GHSA-8g72-338p-wxxq, UBUNTU-CVE-2022-49966.