GSD-2022-1007812 KVM: Reject attempts to consume or refresh inactive gfn_to_pfn_cache
A use-after-free vulnerability in KVM's gfn_to_pfn_cache allows local attackers with high privileges to cause denial of service or escalate privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1007812?
GSD-2022-1007812 is an use after free vulnerability in Kernel, published on 8 Dec 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: Reject attempts to consume or refresh inactive gfn_to_pfn_cache
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 v6.0.8 by commit bfa9672f8fc9eb118124bab61899d2dd497f95ba, it was introduced in version v5.17 by commit 982ed0de4753ed6e71dbd40f82a5a066baf133ed. For more details please see the references link.
Which versions are affected by GSD-2022-1007812?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1007812?
No fix has been published for GSD-2022-1007812 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is GSD-2022-1007812 being exploited?
There is no known exploitation of GSD-2022-1007812 in the wild and no public exploit code.