GSD-2021-1002468 powerpc/32: Fix hardlockup on vmap stack overflow
A hardlockup can occur in the Linux kernel on powerpc/32 systems due to a vmap stack overflow, causing a 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-2021-1002468?
GSD-2021-1002468 is a denial of service vulnerability in Kernel, published on 19 Dec 2021.
Official description
powerpc/32: Fix hardlockup on vmap stack overflow
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 v5.10.83 by commit dfe906da9a1abebdebe8b15bb3e66a2578f6c4c7, it was introduced in version v5.10 by commit c118c7303ad528be8ff2aea8cd1ee15452c763f0. For more details please see the references link.
Which versions are affected by GSD-2021-1002468?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002468?
No fix has been published for GSD-2021-1002468 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-2021-1002468 being exploited?
There is no known exploitation of GSD-2021-1002468 in the wild and no public exploit code.