SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID:    SUSE-SU-2022:2557-1
Rating:             important
References:         #1200549 #1201394 #1201469 
Cross-References:   CVE-2022-21123 CVE-2022-21125 CVE-2022-21166
                    CVE-2022-23816 CVE-2022-23825 CVE-2022-29900
                    CVE-2022-33745
CVSS scores:
                    CVE-2022-21123 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-21123 (SUSE): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
                    CVE-2022-21125 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-21125 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-21166 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-21166 (SUSE): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-23816 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-23825 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-23825 (SUSE): 5.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-29900 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
                    CVE-2022-29900 (SUSE): 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
                    CVE-2022-33745 (SUSE): 7.5 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP5
                    SUSE Linux Enterprise Server for SAP Applications 12-SP5
                    SUSE Linux Enterprise Software Development Kit 12-SP5
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   An update that fixes 7 vulnerabilities is now available.

Description:

   This update for xen fixes the following issues:

   - CVE-2022-21123, CVE-2022-21125, CVE-2022-21166: Fixed MMIO stale data
     vulnerabilities on x86 (XSA-404) (bsc#1200549).
   - CVE-2022-33745: Fixed insufficient TLB flush for x86 PV guests in shadow
     mode (XSA-408) (bsc#1201394).
   - CVE-2022-23816, CVE-2022-23825, CVE-2022-29900: Fixed RETBLEED
     vulnerability, arbitrary speculative code execution with return
     instructions (XSA-407) (bsc#1201469).


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-SP5-2022-2557=1

   - SUSE Linux Enterprise Server 12-SP5:

      zypper in -t patch SUSE-SLE-SERVER-12-SP5-2022-2557=1



Package List:

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

      xen-debugsource-4.12.4_26-3.74.1
      xen-devel-4.12.4_26-3.74.1

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

      xen-4.12.4_26-3.74.1
      xen-debugsource-4.12.4_26-3.74.1
      xen-doc-html-4.12.4_26-3.74.1
      xen-libs-32bit-4.12.4_26-3.74.1
      xen-libs-4.12.4_26-3.74.1
      xen-libs-debuginfo-32bit-4.12.4_26-3.74.1
      xen-libs-debuginfo-4.12.4_26-3.74.1
      xen-tools-4.12.4_26-3.74.1
      xen-tools-debuginfo-4.12.4_26-3.74.1
      xen-tools-domU-4.12.4_26-3.74.1
      xen-tools-domU-debuginfo-4.12.4_26-3.74.1


References:

   https://www.suse.com/security/cve/CVE-2022-21123.html
   https://www.suse.com/security/cve/CVE-2022-21125.html
   https://www.suse.com/security/cve/CVE-2022-21166.html
   https://www.suse.com/security/cve/CVE-2022-23816.html
   https://www.suse.com/security/cve/CVE-2022-23825.html
   https://www.suse.com/security/cve/CVE-2022-29900.html
   https://www.suse.com/security/cve/CVE-2022-33745.html
   https://bugzilla.suse.com/1200549
   https://bugzilla.suse.com/1201394
   https://bugzilla.suse.com/1201469