GSD-2021-1001312 KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
A resource leak in the Linux Kernel KVM PPC module allows local attackers to cause a denial of service by exhausting system resources.
- 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-2021-1001312?
GSD-2021-1001312 is a denial of service vulnerability in Kernel, published on 3 Aug 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak
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 v5.4.136 by commit f38527f1890543cdfca8dfd06f75f9887cce6151, it was introduced in version v4.18 by commit b3cebfe8c1cadf1817939dcc3688a2504a69c662. For more details please see the references link.
Which versions are affected by GSD-2021-1001312?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001312?
No fix has been published for GSD-2021-1001312 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-2021-1001312 being exploited?
There is no known exploitation of GSD-2021-1001312 in the wild and no public exploit code.