GSD-2021-1000019 ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled
A kernel bug in ARM memory management with debug options enabled could lead to system instability or 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-2021-1000019?
GSD-2021-1000019 is a denial of service vulnerability in Kernel, published on 31 May 2021.
Official description
ARM: 9063/1: mm: reduce maximum number of CPUs if DEBUG_KMAP_LOCAL is enabled
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 v5.11.16 by commit 5965ac11b1d5fcb38464728931649cd9df79c7c9, it was introduced in version v5.11 by commit 2a15ba82fa6ca3f35502b3060f22118a938d2889. For more details please see the references link.
Which versions are affected by GSD-2021-1000019?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000019?
No fix has been published for GSD-2021-1000019 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-2021-1000019 being exploited?
There is no known exploitation of GSD-2021-1000019 in the wild and no public exploit code.