Error "The tools ISO must be ejected from all running VMs in the pool" While installing XenServer hotfix.

When attempting to install XenServer hotfix the following error message is displayed: Note that there are no ISO's attached to any of the VM's running in the pool. Also executed the 'xe vm-cd-eject --multiple' command to ensure this is the case: xe vm-cd-eject --multiple operation failed on...

openstack-nova: network security group changes are not applied to running instances

A vulnerability was discovered in the way OpenStack Compute nova networking handled security group updates; changes were not applied to already running VM instances. A remote attacker could use this flaw to access running VM instances...

Important: Red Hat Security Advisory: qemu-kvm security update

Updated qemu-kvm packages that fix one security issue are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available...