SUSE-SU-2021:2846-1: important: Security update for the Linux Kernel (Live Patch 40 for SLE 12 SP3)

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 40 for SLE 12 SP3)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:2846-1
Rating:             important
References:         #1176931 #1182294 #1188842 
Cross-References:   CVE-2020-0429 CVE-2021-28688 CVE-2021-37576
                   
CVSS scores:
                    CVE-2020-0429 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
                    CVE-2020-0429 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-28688 (NVD) : 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
                    CVE-2021-28688 (SUSE): 6.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
                    CVE-2021-37576 (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 Linux Enterprise Server for SAP 12-SP3
                    SUSE Linux Enterprise Server 12-SP3-LTSS
______________________________________________________________________________

   An update that fixes three vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.180-94_147 fixes several issues.

   The following security issues were fixed:

   - CVE-2021-37576: On the powerpc platform KVM guest OS users could cause
     host OS memory corruption via rtas_args.nargs (bsc#1188838).
   - CVE-2021-28688: The fix for XSA-365 includes initialization of pointers
     such that subsequent cleanup code wouldn't use uninitialized or stale
     values. This initialization went too far and may under certain
     conditions also overwrite pointers which are in need of cleaning up.
     (bsc#1183646)
   - CVE-2020-0429: Fixed a potential local privilege escalation in
     l2tp_session_delete and related functions of l2tp_core.c (bsc#1176724).


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 for SAP 12-SP3:

      zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-2846=1

   - SUSE Linux Enterprise Server 12-SP3-LTSS:

      zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-2846=1



Package List:

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

      kgraft-patch-4_4_180-94_147-default-2-2.1
      kgraft-patch-4_4_180-94_147-default-debuginfo-2-2.1

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

      kgraft-patch-4_4_180-94_147-default-2-2.1
      kgraft-patch-4_4_180-94_147-default-debuginfo-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2020-0429.html
   https://www.suse.com/security/cve/CVE-2021-28688.html
   https://www.suse.com/security/cve/CVE-2021-37576.html
   https://bugzilla.suse.com/1176931
   https://bugzilla.suse.com/1182294
   https://bugzilla.suse.com/1188842