Total vulnerabilities in the database
The GNTTABOP_swap_grant_ref sub-operation in the grant table hypercall in Xen 4.2 and Citrix XenServer 6.0.2 allows local guest kernels or administrators to cause a denial of service (host crash) and possibly gain privileges via a crafted grant reference that triggers a write to an arbitrary hypervisor memory location.
| Software | From | Fixed in |
|---|---|---|
| citrix / xenserver | - | 6.0.2.x |
| xen / xen | 4.2.0 | 4.2.0.x |