GSD-2021-1001680 x86/entry: Clear X86_FEATURE_SMAP when CONFIG_X86_SMAP=n
The Linux kernel fails to clear the SMAP feature flag when SMAP is disabled, potentially bypassing security protections.
- 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-2021-1001680?
GSD-2021-1001680 is a vulnerability in Kernel, published on 19 Oct 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
x86/entry: Clear X86_FEATURE_SMAP when CONFIG_X86_SMAP=n
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 v5.14.12 by commit 4e9ec1c65da98c293f75d83755dfa5e03075a6d0, it was introduced in version v5.8 by commit 3c73b81a9164d0c1b6379d6672d2772a9e95168e. For more details please see the references link.
Which versions are affected by GSD-2021-1001680?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001680?
No fix has been published for GSD-2021-1001680 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001680 being exploited?
There is no known exploitation of GSD-2021-1001680 in the wild and no public exploit code.