Brent Sordyl's blog

Red Hat is pursuing a certification for its Linux OS and virtualization, paving the way for government agencies to use the technology to create secure, virtualized IT environments and private clouds.
The Linux vendor has entered into an agreement with Atsec information security to certify Red Hat Enterprise Linux 6 under Common Criteria at Evaluation Assurance Level (EAL) 4, according to a Red Hat blog post.
(Link: Red Hat Pursuing Certification For RHEL 6, Hypervisor)