GSD-2022-1002211 KVM: x86/mmu: do compare-and-exchange of gPTE via the user address
A race condition in KVM x86 MMU allows local attackers to potentially escalate privileges or execute code via improper compare-and-exchange operations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1002211?
GSD-2022-1002211 is a vulnerability in Kernel, published on 24 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: x86/mmu: do compare-and-exchange of gPTE via the user address
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 v5.4.189 by commit 1553126eccf4fad17afaeaed08db9e5944aa2d55, it was introduced in version v5.2 by commit bd53cb35a3e9adb73a834a36586e9ad80e877767. For more details please see the references link.
Which versions are affected by GSD-2022-1002211?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1002211?
No fix has been published for GSD-2022-1002211 yet. Limit exposure of the affected software until one is available.
Is GSD-2022-1002211 being exploited?
There is no known exploitation of GSD-2022-1002211 in the wild and no public exploit code.