Security update for xen
This update for xen to version 4.12.3 fixes the following issues:
- CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it.
This attack is known as Special Register Buffer Data Sampling (SRBDS) or "CrossTalk" (bsc#1172205).
- Added support for new 64bit libxl memory API (bsc#1167007 and bsc#1157490).
This update was imported from the SUSE:SLE-15-SP1:Update update project.
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Submitted by
Charles Arnold (charlesa)
Fixed bugs
bnc#1027519
Xen: Missing upstream bug fixes
bnc#1167007
[limit][xen][SR950] Fail to load libvirtd.service on xen 8TB memory system
bnc#1157490
libvirtd.service fails to load on Xen 12TB system - unable to configure libxl memory management
bnc#1172205
VUL-0: EMBARGOED: CVE-2020-0543: xen: Special Register Buffer Data Sampling (SRBDS) aka "CrossTalk"
