1. 2015-07-27 [1] [Xen-announce] Xen Security Advisory 138 (CVE-2015-51 xen-annou Xen.org secur 2. 2015-07-07 [1] [Xen-announce] Xen Security Advisory 137 (CVE-2015-32 xen-annou Xen.org secur