SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:3852-1
Rating:             moderate
References:         #1027519 #1191363 #1191510 #1192554 #1192557 
                    #1192559 
Cross-References:   CVE-2021-28702 CVE-2021-28704 CVE-2021-28705
                    CVE-2021-28706 CVE-2021-28707 CVE-2021-28708
                    CVE-2021-28709
CVSS scores:
                    CVE-2021-28702 (NVD) : 7.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
                    CVE-2021-28704 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-28705 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-28706 (NVD) : 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
                    CVE-2021-28706 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-28707 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-28708 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-28709 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Software Development Kit 12-SP5
                    SUSE Linux Enterprise Server 12-SP5
______________________________________________________________________________

   An update that fixes 7 vulnerabilities is now available.

Description:

   This update for xen fixes the following issues:

   - CVE-2021-28702: Fixed PCI devices with RMRRs not deassigned correctly
     (XSA-386) (bsc#1191363).
   - CVE-2021-28704, CVE-2021-28707, CVE-2021-28708: Fixed PoD operations on
     misaligned GFNs (XSA-388) (bsc#1192557).
   - CVE-2021-28705, CVE-2021-28709: Fixed issues with partially successful
     P2M updates on x86 (XSA-389) (bsc#1192559).
   - CVE-2021-28706: Fixed guests may exceed their designated memory limit
     (XSA-385) (bsc#1192554).

   - Fixed 15sp4 uefi fv guest on 12sp5 host unable to bootup with sriov pci
     device plugin (bsc#1191510).
   - Upstream bug fixes (bsc#1027519).


Special Instructions and Notes:

   Please reboot the system after installing this update.

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 Linux Enterprise Software Development Kit 12-SP5:

      zypper in -t patch SUSE-SLE-SDK-12-SP5-2021-3852=1

   - SUSE Linux Enterprise Server 12-SP5:

      zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-3852=1



Package List:

   - SUSE Linux Enterprise Software Development Kit 12-SP5 (aarch64 x86_64):

      xen-debugsource-4.12.4_16-3.55.1
      xen-devel-4.12.4_16-3.55.1

   - SUSE Linux Enterprise Server 12-SP5 (x86_64):

      xen-4.12.4_16-3.55.1
      xen-debugsource-4.12.4_16-3.55.1
      xen-doc-html-4.12.4_16-3.55.1
      xen-libs-32bit-4.12.4_16-3.55.1
      xen-libs-4.12.4_16-3.55.1
      xen-libs-debuginfo-32bit-4.12.4_16-3.55.1
      xen-libs-debuginfo-4.12.4_16-3.55.1
      xen-tools-4.12.4_16-3.55.1
      xen-tools-debuginfo-4.12.4_16-3.55.1
      xen-tools-domU-4.12.4_16-3.55.1
      xen-tools-domU-debuginfo-4.12.4_16-3.55.1


References:

   https://www.suse.com/security/cve/CVE-2021-28702.html
   https://www.suse.com/security/cve/CVE-2021-28704.html
   https://www.suse.com/security/cve/CVE-2021-28705.html
   https://www.suse.com/security/cve/CVE-2021-28706.html
   https://www.suse.com/security/cve/CVE-2021-28707.html
   https://www.suse.com/security/cve/CVE-2021-28708.html
   https://www.suse.com/security/cve/CVE-2021-28709.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1191363
   https://bugzilla.suse.com/1191510
   https://bugzilla.suse.com/1192554
   https://bugzilla.suse.com/1192557
   https://bugzilla.suse.com/1192559