GSD-2021-1001849 powerpc/smp: do not decrement idle task preempt count in CPU offline
A kernel bug in powerpc SMP handling could cause a crash during CPU offline, requiring local high-privilege 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-2021-1001849?
GSD-2021-1001849 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 v5.10.76 by commit 53770a411559cf7bc0906d1df319cc533d2f4f58, it was introduced in version v5.10.50 by commit bdf4d33e8342b90386156204e1da0cdfdb4bf146. For more details please see the references link.
Which versions are affected by GSD-2021-1001849?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001849?
No fix has been published for GSD-2021-1001849 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001849 being exploited?
There is no known exploitation of GSD-2021-1001849 in the wild and no public exploit code.