SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:1023-1
Rating:             important
References:         #1027519 #1177112 #1177204 #1178591 #1178736 
                    #1179148 #1181254 #1181989 #1182846 #1183072 
                    
Cross-References:   CVE-2020-28368 CVE-2021-20257 CVE-2021-28687
                    CVE-2021-3308
CVSS scores:
                    CVE-2020-28368 (NVD) : 4.4
 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
                    CVE-2020-28368 (SUSE): 5.6
 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    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-2021-3308 (NVD) : 5.5
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-3308 (SUSE): 5.9
 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/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 solves four vulnerabilities and has 6 fixes
   is now available.

Description:

   This update for xen fixes the following issues:

   - CVE-2021-3308: VUL-0: xen: IRQ vector leak on x86 (bsc#1181254, XSA-360)
   - CVE-2021-28687: VUL-0: xen: HVM soft-reset crashes toolstack
     (bsc#1183072, XSA-368)
   - CVE-2021-20257: VUL-0: xen: infinite loop issue in the e1000 NIC
     emulator (bsc#1182846)
   - CVE-2020-28368: VUL-0: xen: Intel RAPL sidechannel attack aka PLATYPUS
     attack aka (bsc#1178591, XSA-351)
   - L3: conring size for XEN HV's with huge memory to small. Inital Xen
 logs
     cut (bsc#1177204)
   - Kdump of HVM fails, soft-reset not handled by libxl (bsc#1179148)
   - OpenQA job causes libvirtd to dump core when running kdump inside domain
     (bsc#1181989)
   - Allow restart of xenwatchdogd, enable tuning of keep-alive interval and
     timeout
     options via XENWATCHDOGD_ARGS= (bsc#1178736)
   - The receiving side did detect holes in a to-be-allocated superpage, but
     allocated a superpage anyway. This resulted to over-allocation
     (bsc#1177112)
   - The receiving side may punch holes incorrectly into optimistically
     allocated superpages. Also reduce overhead in bitmap handling
     (bsc#1177112)
   - Upstream bug fixes (bsc#1027519)


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-SP5-2021-1023=1

   - SUSE Linux Enterprise Server 12-SP5:

      zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-1023=1



Package List:

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

      xen-debugsource-4.12.4_09-3.39.3
      xen-devel-4.12.4_09-3.39.3

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

      xen-4.12.4_09-3.39.3
      xen-debugsource-4.12.4_09-3.39.3
      xen-doc-html-4.12.4_09-3.39.3
      xen-libs-32bit-4.12.4_09-3.39.3
      xen-libs-4.12.4_09-3.39.3
      xen-libs-debuginfo-32bit-4.12.4_09-3.39.3
      xen-libs-debuginfo-4.12.4_09-3.39.3
      xen-tools-4.12.4_09-3.39.3
      xen-tools-debuginfo-4.12.4_09-3.39.3
      xen-tools-domU-4.12.4_09-3.39.3
      xen-tools-domU-debuginfo-4.12.4_09-3.39.3


References:

   https://www.suse.com/security/cve/CVE-2020-28368.html
   https://www.suse.com/security/cve/CVE-2021-20257.html
   https://www.suse.com/security/cve/CVE-2021-28687.html
   https://www.suse.com/security/cve/CVE-2021-3308.html
   https://bugzilla.suse.com/1027519
   https://bugzilla.suse.com/1177112
   https://bugzilla.suse.com/1177204
   https://bugzilla.suse.com/1178591
   https://bugzilla.suse.com/1178736
   https://bugzilla.suse.com/1179148
   https://bugzilla.suse.com/1181254
   https://bugzilla.suse.com/1181989
   https://bugzilla.suse.com/1182846
   https://bugzilla.suse.com/1183072