This update for xen fixes the following issues: Update to Xen 4.7.5 bug fix only release Security issues fixed: - CVE-2018-7540: Fixed DoS via non-preemptable L3/L4 pagetable freeing - CVE-2018-7541: A grant table v2 -gt; v1 transition may crash Xen - CVE-2017-5753,CVE-2017-5715,CVE-2017-5754 Fixed information leaks via side effects of speculative execution . Includes Spectre v2 mitigation. - Preserve xen-syms from xen-dbg.gz to allow processing vmcores with crash - Xen HVM: Fixed unchecked MSR access error - Add script, udev rule and systemd service to watch for vcpu online/offline events in a HVM domU They are triggered via xl vcpu-set domU N - Make sure tools and tools-domU require libs from the very same build