GSD-2021-1001081 x86/ioremap: Map EFI-reserved memory as encrypted for SEV
An attacker with local access could potentially read encrypted memory contents due to improper mapping of EFI-reserved memory in SEV-enabled Linux kernels.
- 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-2021-1001081?
GSD-2021-1001081 is a vulnerability in Kernel, published on 30 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
x86/ioremap: Map EFI-reserved memory as encrypted for SEV
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 v5.12.13 by commit b7a05aba39f733ec337c5b952e112dd2dc4fc404, it was introduced in version v5.10 by commit 58c909022a5a56cd1d9e89c8c5461fd1f6a27bb5. For more details please see the references link.
Which versions are affected by GSD-2021-1001081?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001081?
No fix has been published for GSD-2021-1001081 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001081 being exploited?
There is no known exploitation of GSD-2021-1001081 in the wild and no public exploit code.