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

Announcement ID:    SUSE-SU-2021:1145-1
Rating:             important
References:         #1182717 #1183120 #1183491 
Cross-References:   CVE-2021-27363 CVE-2021-27364 CVE-2021-27365
                   
CVSS scores:
                    CVE-2021-27363 (NVD) : 4.4
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
                    CVE-2021-27363 (SUSE): 7.1
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
                    CVE-2021-27364 (NVD) : 7.1
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
                    CVE-2021-27364 (SUSE): 7.1
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
                    CVE-2021-27365 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-27365 (SUSE): 7
 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP2-LTSS-SAP
                    SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON
______________________________________________________________________________

   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-2021-27365: Fixed an issue where data structures did not have
     appropriate length constraints or checks, and could exceed the PAGE_SIZE
     value (bsc#1183491).
   - CVE-2021-27363: Fixed a kernel pointer leak which could have been used
     to determine the address of the iscsi_transport structure (bsc#1183120).
   - CVE-2021-27364: Fixed an issue where an unprivileged user could  craft
     Netlink messages (bsc#1182717).


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 Server 12-SP2-LTSS-SAP:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1142=1
 SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1143=1 SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1144=1 SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1145=1 SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1146=1 SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1147=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1142=1
 SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1143=1 SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1144=1 SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1145=1 SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1146=1 SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1147=1



Package List:

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

      kgraft-patch-4_4_121-92_129-default-10-2.2
      kgraft-patch-4_4_121-92_135-default-8-2.2
      kgraft-patch-4_4_121-92_138-default-8-2.2
      kgraft-patch-4_4_121-92_141-default-7-2.2
      kgraft-patch-4_4_121-92_146-default-5-2.2
      kgraft-patch-4_4_121-92_149-default-3-2.2

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

      kgraft-patch-4_4_121-92_129-default-10-2.2
      kgraft-patch-4_4_121-92_135-default-8-2.2
      kgraft-patch-4_4_121-92_138-default-8-2.2
      kgraft-patch-4_4_121-92_141-default-7-2.2
      kgraft-patch-4_4_121-92_146-default-5-2.2
      kgraft-patch-4_4_121-92_149-default-3-2.2


References:

   https://www.suse.com/security/cve/CVE-2021-27363.html
   https://www.suse.com/security/cve/CVE-2021-27364.html
   https://www.suse.com/security/cve/CVE-2021-27365.html
   https://bugzilla.suse.com/1182717
   https://bugzilla.suse.com/1183120
   https://bugzilla.suse.com/1183491