GSD-2021-1000406 kyber: fix out of bounds access when preempted
An out-of-bounds memory access in the Linux kernel kyber scheduler can lead to system crashes or potential code execution when preempted.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2021-1000406?
GSD-2021-1000406 is a memory corruption vulnerability in Kernel, published on 31 May 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
kyber: fix out of bounds access when preempted
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 v5.4.120 by commit 0b6b4b90b74c27bea968c214d820ba4254b903a5, it was introduced in version v4.18 by commit a6088845c2bf754d6cb2572b484180680b037804. For more details please see the references link.
Which versions are affected by GSD-2021-1000406?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1000406?
No fix has been published for GSD-2021-1000406 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is GSD-2021-1000406 being exploited?
There is no known exploitation of GSD-2021-1000406 in the wild and no public exploit code.