GSD-2022-1005689 RISC-V: kexec: Fixup use of smp_processor_id() in preemptible context
A kernel bug in RISC-V kexec handling can cause a crash when executed in preemptible context, requiring local privileged access to trigger.
- 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-2022-1005689?
GSD-2022-1005689 is a denial of service vulnerability in Kernel, published on 17 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
RISC-V: kexec: Fixup use of smp_processor_id() in preemptible context
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 v5.15.61 by commit 22ae2fe4551615e309de8bce22293be5bbf88a53, it was introduced in version v5.15.17 by commit a2389e4f54e5acdde7e6266df0c1fed9bed70eec. For more details please see the references link.
Which versions are affected by GSD-2022-1005689?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1005689?
No fix has been published for GSD-2022-1005689 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-2022-1005689 being exploited?
There is no known exploitation of GSD-2022-1005689 in the wild and no public exploit code.