GSD-2021-1001128 s390/stack: fix possible register corruption with stack switch helper
Register corruption in the s390 stack switch helper may allow local attackers to execute arbitrary code or escalate privileges.
- 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-2021-1001128?
GSD-2021-1001128 is a memory corruption vulnerability in Kernel, published on 8 Jul 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
s390/stack: fix possible register corruption with stack switch helper
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 v5.10.47 by commit 5fd0c2cf7b11c23aebbbc512cfed08485f0a422a, it was introduced in version v4.20 by commit ff340d2472ec7618443913928af9fb85a7009270. For more details please see the references link.
Which versions are affected by GSD-2021-1001128?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001128?
No fix has been published for GSD-2021-1001128 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-2021-1001128 being exploited?
There is no known exploitation of GSD-2021-1001128 in the wild and no public exploit code.