This update for xen fixes the following issues:
Update to Xen 4.7.5 bug fix only release (bsc#1027519)
Security issues fixed:
CVE-2017-5753,CVE-2017-5715,CVE-2017-5754 Fixed information leaks via side effects of speculative execution (XSA-254). Includes Spectre v2 mitigation. (bsc#1074562)
Preserve xen-syms from xen-dbg.gz to allow processing vmcores with crash(1) (bsc#1087251)