GSD-2021-1000012 KVM: VMX: Don't use vcpu->run->internal.ndata as an array index
A flaw in the Linux Kernel KVM VMX module allows local attackers to cause memory corruption, potentially leading to privilege escalation or system 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-2021-1000012?
GSD-2021-1000012 is a memory corruption 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: Don't use vcpu->run->internal.ndata as an array index
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 v5.11.16 by commit ce541d7b59566a0d94c7c99bfb5d34b050e6af70, it was introduced in version v5.9 by commit 1aa561b1a4c0ae2a9a9b9c21a84b5ca66b4775d8. For more details please see the references link.
Which versions are affected by GSD-2021-1000012?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000012?
No fix has been published for GSD-2021-1000012 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000012 being exploited?
There is no known exploitation of GSD-2021-1000012 in the wild and no public exploit code.