GSD-2021-1001765 xen/x86: fix PV trap handling on secondary processors
A flaw in Xen PV trap handling on secondary processors allows local attackers to potentially escalate privileges within the Linux kernel.
- 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-2021-1001765?
GSD-2021-1001765 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
xen/x86: fix PV trap handling on secondary processors
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 v5.14.9 by commit 842f8bde1ed922dd8e3ba3e013352f4055ae4e85, it was introduced in version v2.6.23 by commit f87e4cac4f4e940b328d3deb5b53e642e3881f43. For more details please see the references link.
Which versions are affected by GSD-2021-1001765?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2021-1001765?
No fix has been published for GSD-2021-1001765 yet. Limit exposure of the affected software until one is available.
Is GSD-2021-1001765 being exploited?
There is no known exploitation of GSD-2021-1001765 in the wild and no public exploit code.