GSD-2022-1001991 xen: delay xen_hvm_init_time_ops() if kdump is boot on vcpu>=32
A flaw in the Linux Kernel causes a crash during kdump boot on systems with 32 or more vCPUs, requiring a kernel patch.
- 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-2022-1001991?
GSD-2022-1001991 is a denial of service vulnerability in Kernel, published on 24 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
xen: delay xen_hvm_init_time_ops() if kdump is boot on vcpu>=32
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 v5.10.111 by commit a2a0e04f6478e8c1038db64717f3fafd55de1420. For more details please see the references link.
Which versions are affected by GSD-2022-1001991?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1001991?
No fix has been published for GSD-2022-1001991 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-2022-1001991 being exploited?
There is no known exploitation of GSD-2022-1001991 in the wild and no public exploit code.