Security update for xen (important)

An update that solves one vulnerability and has three fixes
is now available.

Description:

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.

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods
like YaST online_update or “zypper patch”.

Alternatively you can run the command listed for your product:

• openSUSE Leap 15.1:

  zypper in -t patch openSUSE-2020-818=1