GSD-2021-1002563 KVM: MMU: shadow nested paging does not have PKU
KVM shadow nested paging lacks Protection Keys for Userspace (PKU) support, potentially allowing guest users to bypass memory protection mechanisms.
- 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-2021-1002563?
GSD-2021-1002563 is a 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
KVM: MMU: shadow nested paging does not have PKU
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 87d9c628be264a4d2dbb9eb0e7d629aef8b66339. For more details please see the references link.
Which versions are affected by GSD-2021-1002563?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002563?
No fix has been published for GSD-2021-1002563 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1002563 being exploited?
There is no known exploitation of GSD-2021-1002563 in the wild and no public exploit code.