Changelog for xen-installer-files-4.7.5-5.4.1.xcp.x86_64.rpm :

* Thu Aug 02 2018 Samuel Verschelde - 4.7.5-7.4.1xcp- Security update- Fix CVE-2018-12893: x86: #DB exception safety check can be triggered by a guest- Fix CVE-2018-12891: preemption checks bypassed in x86 PV MM handling