Acabei de receber isto da solus:

Xen issue XSA-108

Hi Marco Antonio,
This is a short note to make you aware of the Xen security advisory XSA-108, which may have an impact on Xen hypervisors in SolusVM. It is not a SolusVM issue - it is an issue that affects many Xen environments.
What is the nature of the advisory?
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Unfortunately we are under embargo. We cannot reveal specific details of the issue or patches at this time.
The embargo will be lifted at 1pm UK time on Wednesday 1st October.
If you are in a position to patch your Xen hypervisors now, we recommend you do so. Otherwise, we recommend that you prepare to patch your hypervisors as soon as possible after the embargo has lifted.
More information, coming soon
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Keep watch on the Xen advisory site, where patches will be made available at 1pm on 1st October: http://xenbits.xen.org/xsa/. When the embargo has lifted we will publish a Knowledge Base article with details.
With thanks,

The SolusVM team