GSD-2021-1002009 powerpc/idle: Don't corrupt back chain when going idle
A memory corruption issue in the Linux kernel powerpc idle path can lead to system crashes or potential code execution, requiring a kernel patch.
- 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-2021-1002009?
GSD-2021-1002009 is a memory corruption vulnerability in Kernel, published on 14 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
powerpc/idle: Don't corrupt back chain when going idle
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 v5.4.156 by commit 8e25a62e8dab7bb09da337354ed1be5df61f83a0, it was introduced in version v5.4.156 by commit 80bbb0bc3a0288442f7fe6fc514f4ee1cb06ccb7. For more details please see the references link.
Which versions are affected by GSD-2021-1002009?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1002009?
No fix has been published for GSD-2021-1002009 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-2021-1002009 being exploited?
There is no known exploitation of GSD-2021-1002009 in the wild and no public exploit code.