SUSE-SU-2020:1139-1 Security update for xen

This update for xen to version 4.12.2 fixes the following issues: Security issues fixed: - CVE-2020-11742: Bad continuation handling in GNTTABOPcopy bsc1169392. - CVE-2020-11740, CVE-2020-11741: xen: XSA-313 multiple xenoprof issues bsc1168140. - CVE-2020-11739: Missing memory barriers in...