GSD-2021-1001817 KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
A stack handling error in KVM PPC HV allows local attackers to potentially execute code 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-2021-1001817?
GSD-2021-1001817 is a memory corruption vulnerability in Kernel, published on 28 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
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 v5.4.156 by commit 80bbb0bc3a0288442f7fe6fc514f4ee1cb06ccb7, it was introduced in version v5.2 by commit 10d91611f426d4bafd2a83d966c36da811b2f7ad. For more details please see the references link.
Which versions are affected by GSD-2021-1001817?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001817?
No fix has been published for GSD-2021-1001817 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-2021-1001817 being exploited?
There is no known exploitation of GSD-2021-1001817 in the wild and no public exploit code.