Current install

    xen-4.9.0_50-535.7.x86_64

on Opensuse 42.3 host.

Noting/tracking multiple CVEs across multiple Xen versions; watching for
patched releases:

    [Xen-users] Xen Security Advisory 244 (CVE-2017-15594) - x86: Incorrect
handling of IST settings during CPU hotplug
    [Xen-users] Xen Security Advisory 243 (CVE-2017-15592) - x86: Incorrect
handling of self-linear shadow mappings with translated guests
    [Xen-users] Xen Security Advisory 242 (CVE-2017-15593) - page type
reference leak on x86
    [Xen-users] Xen Security Advisory 241 (CVE-2017-15588) - Stale TLB entry
due to page type release race
    [Xen-users] Xen Security Advisory 240 (CVE-2017-15595) - Unlimited
recursion in linear pagetable de-typing
    [Xen-users] Xen Security Advisory 239 (CVE-2017-15589) - hypervisor stack
leak in x86 I/O intercept code
    [Xen-users] Xen Security Advisory 237 (CVE-2017-15590) - multiple MSI
mapping issues on x86
    [Xen-users] Xen Security Advisory 235 (CVE-2017-15596) - add-to-physmap
error paths fail to release lock on ARM