GSD-2022-1001420 KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs
A guest VM can trigger undefined behavior in the host kernel by writing reserved bits to specific MSRs, potentially leading to privilege escalation or crashes.
- 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-2022-1001420?
GSD-2022-1001420 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/svm: Clear reserved bits written to PerfEvtSeln 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 v5.16.20 by commit d4a764be384f99da35378d4c3c7adb9b5e683536, it was introduced in version v4.2 by commit ca724305a2b02abcbecbf22577536fc8e965ab4f. For more details please see the references link.
Which versions are affected by GSD-2022-1001420?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1001420?
No fix has been published for GSD-2022-1001420 yet. Limit exposure of the affected software until one is available.
Is GSD-2022-1001420 being exploited?
There is no known exploitation of GSD-2022-1001420 in the wild and no public exploit code.