SUSE-SU-2018:0909-1 Security update for xen

This update for xen fixes the following issues: Update to Xen 4.7.5 bug fix only release bsc1027519 Security issues fixed: - CVE-2018-7540: Fixed DoS via non-preemptable L3/L4 pagetable freeing XSA-252 bsc1080635 - CVE-2018-7541: A grant table v2 - v1 transition may crash Xen XSA-255 bsc1080662 -...