GSD-2021-1000205 powerpc/64s: Fix crashes when toggling entry flush barrier
A flaw in the Linux kernel powerpc/64s architecture causes system crashes when toggling the entry flush barrier, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000205?
GSD-2021-1000205 is a denial of service vulnerability in Kernel, published on 31 May 2021.
Official description
powerpc/64s: Fix crashes when toggling entry flush barrier
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 v5.12.5 by commit 5bc00fdda1e934c557351a9c751a205293e68cbf, it was introduced in version v5.10 by commit f79643787e0a0762d2409b7b8334e83f22d85695. For more details please see the references link.
Which versions are affected by GSD-2021-1000205?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000205?
No fix has been published for GSD-2021-1000205 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-2021-1000205 being exploited?
There is no known exploitation of GSD-2021-1000205 in the wild and no public exploit code.