GSD-2022-1005020 arm64/sme: Don't flush SVE register state when allocating SME storage
A flaw in the Linux kernel's ARM64 SME implementation may allow local attackers to read sensitive SVE register state due to improper flushing during storage allocation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is GSD-2022-1005020?
GSD-2022-1005020 is a vulnerability in Kernel, published on 16 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
arm64/sme: Don't flush SVE register state when allocating SME storage
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 v5.19.6 by commit a8d79f9d1a4d90b7b4eb8bf7aa61995359aeb02e, it was introduced in version v5.19 by commit 8bd7f91c03d886f41d35f6108078d20be5a4a1bd. For more details please see the references link.
Which versions are affected by GSD-2022-1005020?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1005020?
No fix has been published for GSD-2022-1005020 yet. Limit exposure of the affected software until one is available.
Is GSD-2022-1005020 being exploited?
There is no known exploitation of GSD-2022-1005020 in the wild and no public exploit code.