GSD-2022-1006321 KVM: x86: Mark TSS busy during LTR emulation _after_ all fault checks
A flaw in KVM x86 TSS emulation allows local attackers to potentially escalate privileges by bypassing fault checks.
- 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-2022-1006321?
GSD-2022-1006321 is a vulnerability in Kernel, published on 17 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
KVM: x86: Mark TSS busy during LTR emulation after all fault checks
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 v4.9.326 by commit 85c0a088ab42cf0faa95ea37b0dae1f276870149, it was introduced in version v3.17 by commit e37a75a13cdae5deaa2ea2cbf8d55b5dd08638b6. For more details please see the references link.
Which versions are affected by GSD-2022-1006321?
1 open source package ship an affected version, including Kernel.
| Package | Affected | Fixed in |
|---|---|---|
Kernel Linux | All versions | None |
How do I fix GSD-2022-1006321?
No fix has been published for GSD-2022-1006321 yet. Limit exposure of the affected software until one is available.
Is GSD-2022-1006321 being exploited?
There is no known exploitation of GSD-2022-1006321 in the wild and no public exploit code.