SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:1252-1
Rating:             important
References:         #1182431 #1182846 
Cross-References:   CVE-2021-20257 CVE-2021-27379
CVSS scores:
                    CVE-2021-20257 (SUSE): 3.2
 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
                    CVE-2021-27379 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-27379 (SUSE): 7.9
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

Affected Products:
                    SUSE OpenStack Cloud Crowbar 8
                    SUSE OpenStack Cloud 8
                    SUSE Linux Enterprise Server for SAP 12-SP3
                    SUSE Linux Enterprise Server 12-SP3-LTSS
                    SUSE Linux Enterprise Server 12-SP3-BCL
                    HPE Helion Openstack 8
______________________________________________________________________________

   An update that fixes two vulnerabilities is now available.

Description:

   This update for xen fixes the following issues:

   - CVE-2021-20257: xen: infinite loop issue in the e1000 NIC emulator
     (bsc#1182846).
   - CVE-2021-27379: Fixed an issue where entries in the IOMMU were not being
     updated under certain circumstances due to improper backport of XSA-321
     (XSA-366, bsc#1182431).


Patch Instructions:

   To install this SUSE 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:

   - SUSE OpenStack Cloud Crowbar 8:

      zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2021-1252=1

   - SUSE OpenStack Cloud 8:

      zypper in -t patch SUSE-OpenStack-Cloud-8-2021-1252=1

   - SUSE Linux Enterprise Server for SAP 12-SP3:

      zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-1252=1

   - SUSE Linux Enterprise Server 12-SP3-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-1252=1

   - SUSE Linux Enterprise Server 12-SP3-BCL:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2021-1252=1

   - HPE Helion Openstack 8:

      zypper in -t patch HPE-Helion-OpenStack-8-2021-1252=1



Package List:

   - SUSE OpenStack Cloud Crowbar 8 (x86_64):

      xen-4.9.4_16-3.83.1
      xen-debugsource-4.9.4_16-3.83.1
      xen-doc-html-4.9.4_16-3.83.1
      xen-libs-32bit-4.9.4_16-3.83.1
      xen-libs-4.9.4_16-3.83.1
      xen-libs-debuginfo-32bit-4.9.4_16-3.83.1
      xen-libs-debuginfo-4.9.4_16-3.83.1
      xen-tools-4.9.4_16-3.83.1
      xen-tools-debuginfo-4.9.4_16-3.83.1
      xen-tools-domU-4.9.4_16-3.83.1
      xen-tools-domU-debuginfo-4.9.4_16-3.83.1

   - SUSE OpenStack Cloud 8 (x86_64):

      xen-4.9.4_16-3.83.1
      xen-debugsource-4.9.4_16-3.83.1
      xen-doc-html-4.9.4_16-3.83.1
      xen-libs-32bit-4.9.4_16-3.83.1
      xen-libs-4.9.4_16-3.83.1
      xen-libs-debuginfo-32bit-4.9.4_16-3.83.1
      xen-libs-debuginfo-4.9.4_16-3.83.1
      xen-tools-4.9.4_16-3.83.1
      xen-tools-debuginfo-4.9.4_16-3.83.1
      xen-tools-domU-4.9.4_16-3.83.1
      xen-tools-domU-debuginfo-4.9.4_16-3.83.1

   - SUSE Linux Enterprise Server for SAP 12-SP3 (x86_64):

      xen-4.9.4_16-3.83.1
      xen-debugsource-4.9.4_16-3.83.1
      xen-doc-html-4.9.4_16-3.83.1
      xen-libs-32bit-4.9.4_16-3.83.1
      xen-libs-4.9.4_16-3.83.1
      xen-libs-debuginfo-32bit-4.9.4_16-3.83.1
      xen-libs-debuginfo-4.9.4_16-3.83.1
      xen-tools-4.9.4_16-3.83.1
      xen-tools-debuginfo-4.9.4_16-3.83.1
      xen-tools-domU-4.9.4_16-3.83.1
      xen-tools-domU-debuginfo-4.9.4_16-3.83.1

   - SUSE Linux Enterprise Server 12-SP3-LTSS (x86_64):

      xen-4.9.4_16-3.83.1
      xen-debugsource-4.9.4_16-3.83.1
      xen-doc-html-4.9.4_16-3.83.1
      xen-libs-32bit-4.9.4_16-3.83.1
      xen-libs-4.9.4_16-3.83.1
      xen-libs-debuginfo-32bit-4.9.4_16-3.83.1
      xen-libs-debuginfo-4.9.4_16-3.83.1
      xen-tools-4.9.4_16-3.83.1
      xen-tools-debuginfo-4.9.4_16-3.83.1
      xen-tools-domU-4.9.4_16-3.83.1
      xen-tools-domU-debuginfo-4.9.4_16-3.83.1

   - SUSE Linux Enterprise Server 12-SP3-BCL (x86_64):

      xen-4.9.4_16-3.83.1
      xen-debugsource-4.9.4_16-3.83.1
      xen-doc-html-4.9.4_16-3.83.1
      xen-libs-32bit-4.9.4_16-3.83.1
      xen-libs-4.9.4_16-3.83.1
      xen-libs-debuginfo-32bit-4.9.4_16-3.83.1
      xen-libs-debuginfo-4.9.4_16-3.83.1
      xen-tools-4.9.4_16-3.83.1
      xen-tools-debuginfo-4.9.4_16-3.83.1
      xen-tools-domU-4.9.4_16-3.83.1
      xen-tools-domU-debuginfo-4.9.4_16-3.83.1

   - HPE Helion Openstack 8 (x86_64):

      xen-4.9.4_16-3.83.1
      xen-debugsource-4.9.4_16-3.83.1
      xen-doc-html-4.9.4_16-3.83.1
      xen-libs-32bit-4.9.4_16-3.83.1
      xen-libs-4.9.4_16-3.83.1
      xen-libs-debuginfo-32bit-4.9.4_16-3.83.1
      xen-libs-debuginfo-4.9.4_16-3.83.1
      xen-tools-4.9.4_16-3.83.1
      xen-tools-debuginfo-4.9.4_16-3.83.1
      xen-tools-domU-4.9.4_16-3.83.1
      xen-tools-domU-debuginfo-4.9.4_16-3.83.1


References:

   https://www.suse.com/security/cve/CVE-2021-20257.html
   https://www.suse.com/security/cve/CVE-2021-27379.html
   https://bugzilla.suse.com/1182431
   https://bugzilla.suse.com/1182846