Xen 3.1.1 does not prevent modification of the CR4 TSC from applications, which allows pv guests to cause a denial of service (crash).
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xensource_inc | 3.1.1 (including) | 3.1.1 (including) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-92.1.18.el5 | * |
| Xen-3.0 | Ubuntu | edgy | * |
| Xen-3.0 | Ubuntu | feisty | * |
| Xen-3.1 | Ubuntu | gutsy | * |
| Xen-3.1 | Ubuntu | hardy | * |
| Xen-3.1 | Ubuntu | intrepid | * |