CVE-2012-3516

Name of the Vulnerable Software and Affected Versions Xen versions 4.2 Citrix XenServer version 6.0.2

Description The issue allows local guest kernels or administrators to cause a denial of service, potentially leading to a host crash, and possibly gain privileges. This is achieved by crafting a grant reference that triggers a write to an arbitrary hypervisor memory location through the GNTTABOP swap grant ref sub-operation in the grant table hypercall.

Recommendations For Xen version 4.2, update to a version that includes a fix for this issue. For Citrix XenServer version 6.0.2, apply the recommended patch or update to a newer version that addresses this problem.