GSD-2021-1002571 drm/vc4: kms: Clear the HVS FIFO commit pointer once done
A use-after-free vulnerability in the Linux Kernel DRM driver allows local attackers to cause denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1002571?
GSD-2021-1002571 is an use after free vulnerability in Kernel, published on 19 Dec 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
drm/vc4: kms: Clear the HVS FIFO commit pointer once done
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.15.7 by commit 2931db9a5ed219546cf2ae0546698faf78281b89, it was introduced in version v5.12 by commit 9ec03d7f1ed394897891319a4dda75f52c5d292d. For more details please see the references link.
Which versions are affected by GSD-2021-1002571?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002571?
No fix has been published for GSD-2021-1002571 yet. Limit exposure of the affected software until one is available.
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 GSD-2021-1002571 being exploited?
There is no known exploitation of GSD-2021-1002571 in the wild and no public exploit code.