GSD-2021-1000224 KVM: SVM: Make sure GHCB is mapped before updating
A missing check in the Linux Kernel KVM SVM module can lead to a null pointer dereference, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000224?
GSD-2021-1000224 is a vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: SVM: Make sure GHCB is mapped before updating
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 v5.12.5 by commit fd722a57fe0b80133dacae4e1c852ee4212f9b2e, it was introduced in version v5.11 by commit f1c6366e304328de301be362eca905a3503ff33b. For more details please see the references link.
Which versions are affected by GSD-2021-1000224?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000224?
No fix has been published for GSD-2021-1000224 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000224 being exploited?
There is no known exploitation of GSD-2021-1000224 in the wild and no public exploit code.