SUSE Security Update: Security update for the Linux Kernel (Live Patch 36
 for SLE 12 SP2)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:0870-1
Rating:             important
References:         #1178684 #1179616 #1181553 
Cross-References:   CVE-2020-27786 CVE-2020-28374 CVE-2021-3347
                   
CVSS scores:
                    CVE-2020-27786 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2020-27786 (SUSE): 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2020-28374 (NVD) : 8.1
 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
                    CVE-2020-28374 (SUSE): 8.1
 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
                    CVE-2021-3347 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-3347 (SUSE): 8.4
 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE OpenStack Cloud 7
                    SUSE Linux Enterprise Server for SAP 12-SP3
                    SUSE Linux Enterprise Server for SAP 12-SP2
                    SUSE Linux Enterprise Server 12-SP3-LTSS
                    SUSE Linux Enterprise Server 12-SP2-LTSS
______________________________________________________________________________

   An update that fixes three vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.121-92_138 fixes several issues.

   The following security issues were fixed:

   - CVE-2021-3347: Fixed a use-after-free in the PI futexes during fault
     handling, allowing local users to execute code in the kernel
     (bsc#1181553).
   - CVE-2020-27786: Fixed a potential user after free which could have led
     to memory corruption or privilege escalation (bsc#1179616).
   - CVE-2020-28374: Fixed insufficient identifier checking in the LIO SCSI
     target code which could have been used by remote attackers to read or
     write files via directory traversal in an XCOPY request (bsc#1178684).


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 7:

      zypper in -t patch SUSE-OpenStack-Cloud-7-2021-870=1

   - SUSE Linux Enterprise Server for SAP 12-SP3:

      zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-829=1
 SUSE-SLE-SAP-12-SP3-2021-830=1 SUSE-SLE-SAP-12-SP3-2021-831=1 SUSE-SLE-SAP-12-SP3-2021-832=1 SUSE-SLE-SAP-12-SP3-2021-833=1 SUSE-SLE-SAP-12-SP3-2021-834=1

   - SUSE Linux Enterprise Server for SAP 12-SP2:

      zypper in -t patch SUSE-SLE-SAP-12-SP2-2021-836=1
 SUSE-SLE-SAP-12-SP2-2021-837=1 SUSE-SLE-SAP-12-SP2-2021-838=1 SUSE-SLE-SAP-12-SP2-2021-839=1 SUSE-SLE-SAP-12-SP2-2021-870=1

   - SUSE Linux Enterprise Server 12-SP3-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-829=1
 SUSE-SLE-SERVER-12-SP3-2021-830=1 SUSE-SLE-SERVER-12-SP3-2021-831=1 SUSE-SLE-SERVER-12-SP3-2021-832=1 SUSE-SLE-SERVER-12-SP3-2021-833=1 SUSE-SLE-SERVER-12-SP3-2021-834=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-2021-836=1
 SUSE-SLE-SERVER-12-SP2-2021-837=1 SUSE-SLE-SERVER-12-SP2-2021-838=1 SUSE-SLE-SERVER-12-SP2-2021-839=1 SUSE-SLE-SERVER-12-SP2-2021-870=1



Package List:

   - SUSE OpenStack Cloud 7 (x86_64):

      kgraft-patch-4_4_121-92_138-default-7-2.2

   - SUSE Linux Enterprise Server for SAP 12-SP3 (ppc64le x86_64):

      kgraft-patch-4_4_180-94_116-default-8-2.2
      kgraft-patch-4_4_180-94_116-default-debuginfo-8-2.2
      kgraft-patch-4_4_180-94_121-default-7-2.2
      kgraft-patch-4_4_180-94_121-default-debuginfo-7-2.2
      kgraft-patch-4_4_180-94_124-default-7-2.2
      kgraft-patch-4_4_180-94_124-default-debuginfo-7-2.2
      kgraft-patch-4_4_180-94_127-default-7-2.2
      kgraft-patch-4_4_180-94_127-default-debuginfo-7-2.2
      kgraft-patch-4_4_180-94_130-default-6-2.2
      kgraft-patch-4_4_180-94_130-default-debuginfo-6-2.2
      kgraft-patch-4_4_180-94_135-default-4-2.2
      kgraft-patch-4_4_180-94_135-default-debuginfo-4-2.2

   - SUSE Linux Enterprise Server for SAP 12-SP2 (ppc64le x86_64):

      kgraft-patch-4_4_121-92_129-default-9-2.2
      kgraft-patch-4_4_121-92_135-default-7-2.2
      kgraft-patch-4_4_121-92_138-default-7-2.2
      kgraft-patch-4_4_121-92_141-default-6-2.2
      kgraft-patch-4_4_121-92_146-default-4-2.2

   - SUSE Linux Enterprise Server 12-SP3-LTSS (ppc64le x86_64):

      kgraft-patch-4_4_180-94_116-default-8-2.2
      kgraft-patch-4_4_180-94_116-default-debuginfo-8-2.2
      kgraft-patch-4_4_180-94_121-default-7-2.2
      kgraft-patch-4_4_180-94_121-default-debuginfo-7-2.2
      kgraft-patch-4_4_180-94_124-default-7-2.2
      kgraft-patch-4_4_180-94_124-default-debuginfo-7-2.2
      kgraft-patch-4_4_180-94_127-default-7-2.2
      kgraft-patch-4_4_180-94_127-default-debuginfo-7-2.2
      kgraft-patch-4_4_180-94_130-default-6-2.2
      kgraft-patch-4_4_180-94_130-default-debuginfo-6-2.2
      kgraft-patch-4_4_180-94_135-default-4-2.2
      kgraft-patch-4_4_180-94_135-default-debuginfo-4-2.2

   - SUSE Linux Enterprise Server 12-SP2-LTSS (ppc64le x86_64):

      kgraft-patch-4_4_121-92_129-default-9-2.2
      kgraft-patch-4_4_121-92_135-default-7-2.2
      kgraft-patch-4_4_121-92_138-default-7-2.2
      kgraft-patch-4_4_121-92_141-default-6-2.2
      kgraft-patch-4_4_121-92_146-default-4-2.2


References:

   https://www.suse.com/security/cve/CVE-2020-27786.html
   https://www.suse.com/security/cve/CVE-2020-28374.html
   https://www.suse.com/security/cve/CVE-2021-3347.html
   https://bugzilla.suse.com/1178684
   https://bugzilla.suse.com/1179616
   https://bugzilla.suse.com/1181553