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libvirt was updated to fix security issues and bugs : Security issues fixed: CVE-2013-4311: Add support for using 3-arg pkcheck syntax for process to avoid race conditions. CVE-2013-4296: Fix a crash (denial of service) in remoteDispatchDomainMemoryStats CVE-2013-5651: Fix virBitmapParse to avoid access beyond bounds of array (denial of service crash). Also bugs were fixed : - nwfilter: check for inverted ctdir. bnc#810611 - Add xencommons as 'Wanted' in the systemd libvirtd service file. bnc#820888