Scientific Linux Security Update : kvm on SL5.x x86_64
Low Nessus Plugin ID 60934
SynopsisThe remote Scientific Linux host is missing one or more security updates.
DescriptionA data structure field in kvm_vcpu_ioctl_x86_get_vcpu_events() in QEMU-KVM was not initialized properly before being copied to user-space. A privileged host user with access to '/dev/kvm' could use this flaw to leak kernel stack memory to user-space. (CVE-2010-4525)
These updated packages also fix several bugs.
The following procedure must be performed before this update will take effect :
1) Stop all KVM guest virtual machines.
2) Either reboot the hypervisor machine or, as the root user, remove (using 'modprobe -r [module]') and reload (using 'modprobe [module]') all of the following modules which are currently running (determined using 'lsmod'): kvm, ksm, kvm-intel or kvm-amd.
3) Restart the KVM guest virtual machines.
SolutionUpdate the affected packages.