Fedora 26 : xen (2017-16a414b3c5)

another patch related to the XSA-240, CVE-2017-15595 issue xen: various flaws 1525018 x86 PV guests may gain access to internally used page XSA-248 broken x86 shadow mode refcount overflow check XSA-249 improper x86 shadow mode refcount error handling XSA-250 improper bug check in x86 log-dirty...