GSD-2021-1001889 powerpc/smp: do not decrement idle task preempt count in CPU offline
A kernel bug in powerpc SMP handling could cause a denial of service during CPU offline operations, requiring local privileged access.
- 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-2021-1001889?
GSD-2021-1001889 is a 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
powerpc/smp: do not decrement idle task preempt count in CPU offline
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 v5.14.15 by commit 3ea0b497a7a2fff6a4b7090310c9f52c91975934, it was introduced in version v5.14 by commit 2c669ef6979c370f98d4b876e54f19613c81e075. For more details please see the references link.
Which versions are affected by GSD-2021-1001889?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001889?
No fix has been published for GSD-2021-1001889 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001889 being exploited?
There is no known exploitation of GSD-2021-1001889 in the wild and no public exploit code.