RedHat Security Advisory RHSA-2009:1465

Summary
The remote host is missing updates announced in advisory RHSA-2009:1465. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. The kvm_emulate_hypercall() implementation was missing a check for the Current Privilege Level (CPL). A local, unprivileged user in a virtual machine could use this flaw to cause a local denial of service or escalate their privileges within that virtual machine. (CVE-2009-3290) All KVM users should upgrade to these updated packages, which contain backported patches to resolve these issues. Note: The procedure in the
Solution
Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date
References