This update for xen fixes the following issues:

Security issues fixed:

- CVE-2018-18849: Fixed an out of bounds memory access issue was found in the LSI53C895A SCSI Host Bus Adapter
emulation while writing a message in lsi_do_msgin (bsc#1114423).
- CVE-2018-18883: Fixed a NULL pointer dereference that could have been triggered by nested VT-x that where
not properly restricted (XSA-278)(bsc#1114405).
- CVE-2018-19965: Fixed denial of service issue from attempting to use INVPCID with a non-canonical addresses
(XSA-279)(bsc#1115045).
- CVE-2018-19966: Fixed issue introduced by XSA-240 that could have caused conflicts with shadow paging
(XSA-280)(bsc#1115047).
- CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB flushing / improper large page mappings with AMD IOMMUs
(XSA-275)(bsc#1115040).

Non-security issues fixed:

- Added upstream bug fixes (bsc#1027519).

This update was imported from the SUSE:SLE-12-SP3:Update update project.