Hi,
The following updates are available :
KVM:
CentOS 7 – Updates available
CentOS 6 – Updates available
Xen:
CentOS 7 – Updates available
CentOS 6 – Updates available
If a Xen PV guest is updated to the new CentOS 6 kernel (2.6.32-696.18.7.el6.x86_64) it may prevent the guest from booting.
OpenVZ:
Virtuozzo Linux 7 – Updates available
CentOS 6 – Updates available
Regards,
Virtualizor Team.