GSD-2021-1000190 KVM: VMX: Disable preemption when probing user return MSRs
A race condition in KVM VMX MSR probing can cause system instability or crashes, requiring local access to exploit.
- 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-2021-1000190?
GSD-2021-1000190 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: VMX: Disable preemption when probing user return MSRs
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 e3ea1895df719c4ef87862501bb10d95f4177bed, it was introduced in version v5.5 by commit 4be5341026246870818e28b53202b001426a5aec. For more details please see the references link.
Which versions are affected by GSD-2021-1000190?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000190?
No fix has been published for GSD-2021-1000190 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1000190 being exploited?
There is no known exploitation of GSD-2021-1000190 in the wild and no public exploit code.