Security update for xen (important)

An update that solves 5 vulnerabilities and has one errata
is now available.

Description:

This update for xen fixes the following issues:

• CVE-2020-15563: Fixed inverted code paths in x86 dirty VRAM tracking
  (bsc#1173377).
• CVE-2020-15565: Fixed insufficient cache write-back under VT-d
  (bsc#1173378).
• CVE-2020-15566: Fixed incorrect error handling in event channel port
  allocation (bsc#1173376).
• CVE-2020-15567: Fixed non-atomic modification of live EPT PTE
  (bsc#1173380).
• CVE-2020-0543: Special Register Buffer Data Sampling (SRBDS) aka
  “CrossTalk” (bsc#1172205).

Additional upstream bug fixes (bsc#1027519)

This update was imported from the SUSE:SLE-15-SP2: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 15.2:

  zypper in -t patch openSUSE-2020-985=1