GSD-2021-1000466 powerpc/64s: Fix crashes when toggling entry flush barrier
A flaw in the Linux kernel powerpc/64s entry flush barrier can cause system crashes, 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-2021-1000466?
GSD-2021-1000466 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 v4.14.233 by commit ee4b7aab93c2631c3bb0753023c5dda592bb666b, it was introduced in version v4.14.208 by commit db01cad9efe3c3838a6b3a3f68affd295c4b92d6. For more details please see the references link.
Which versions are affected by GSD-2021-1000466?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000466?
No fix has been published for GSD-2021-1000466 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-2021-1000466 being exploited?
There is no known exploitation of GSD-2021-1000466 in the wild and no public exploit code.