CVE-2022-49645 drm/panfrost: Fix shrinker list corruption by madvise IOCTL
A double madvise call on a buffer object corrupts the memory shrinker list, causing a kernel crash and 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-2022-49645?
CVE-2022-49645 is a high-severity memory corruption 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/panfrost: Fix shrinker list corruption by madvise IOCTL
Calling madvise IOCTL twice on BO causes memory shrinker list corruption and crashes kernel because BO is already on the list and it's added to the list again, while BO should be removed from the list before it's re-added. Fix it.
Weakness: CWE-787
Which versions are affected by CVE-2022-49645?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49645?
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-2022-49645 being exploited?
There is no known exploitation of CVE-2022-49645 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49645, GHSA-p6f8-xrf4-44j4, UBUNTU-CVE-2022-49645.