The do_physdev_op function in Xen 4.1.5, 4.1.6.1, 4.2.2 through 4.2.3, and 4.3.x does not properly restrict access to the (1) PHYSDEVOP_prepare_msix and (2) PHYSDEVOP_release_msix operations, which allows local PV guests to cause a denial of service (host or guest malfunction) or possibly gain privileges via unspecified vectors.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | 4.1.5 (including) | 4.1.5 (including) |
| Xen | Xen | 4.1.6.1 (including) | 4.1.6.1 (including) |
| Xen | Xen | 4.2.2 (including) | 4.2.2 (including) |
| Xen | Xen | 4.2.3 (including) | 4.2.3 (including) |
| Xen | Xen | 4.3.0 (including) | 4.3.0 (including) |
| Xen | Xen | 4.3.1 (including) | 4.3.1 (including) |
| Xen | Ubuntu | devel | * |
| Xen | Ubuntu | precise | * |
| Xen | Ubuntu | quantal | * |
| Xen | Ubuntu | raring | * |
| Xen | Ubuntu | saucy | * |
| Xen | Ubuntu | upstream | * |
| Xen-3.3 | Ubuntu | upstream | * |