Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by using DMA to generate MSI interrupts by writing to the interrupt injection registers.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Citrix | 4.0.0 (including) | 4.0.0 (including) |
| Xen | Citrix | 4.0.1 (including) | 4.0.1 (including) |
| Xen | Citrix | 4.1.0 (including) | 4.1.0 (including) |