GSD-2022-1005170 KVM: Unconditionally get a ref to /dev/kvm module when creating a VM
A missing reference count in KVM VM creation can lead to a use-after-free or crash, allowing local attackers to cause denial of service.
- 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-2022-1005170?
GSD-2022-1005170 is a denial of service vulnerability in Kernel, published on 16 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: Unconditionally get a ref to /dev/kvm module when creating a VM
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 v5.19.4 by commit 865e08b77c244eed0b80439320e7e8440f61ebce, it was introduced in version v5.18 by commit 5f6de5cbebee925a612856fce6f9182bb3eee0db. For more details please see the references link.
Which versions are affected by GSD-2022-1005170?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1005170?
No fix has been published for GSD-2022-1005170 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is GSD-2022-1005170 being exploited?
There is no known exploitation of GSD-2022-1005170 in the wild and no public exploit code.