SUSE-SU-2021:1347-1: important: Security update for the Linux Kernel (Live Patch 23 for SLE 15)

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

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 23 for SLE 15)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:1347-1
Rating:             important
References:         #1182294 #1184171 
Cross-References:   CVE-2021-28688 CVE-2021-3444
CVSS scores:
                    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-2021-3444 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-3444 (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 Module for Live Patching 15
                    SUSE Linux Enterprise Live Patching 12-SP4
______________________________________________________________________________

   An update that fixes two vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.12.14-150_69 fixes several issues.

   The following security issues were fixed:

   - CVE-2021-3444: Fixed an issue with the bpf verifier which did not
     properly handle mod32 destination register truncation when the source
     register was known to be 0 leading to out of bounds read  (bsc#1184171).
   - CVE-2021-28688: Fixed an issue introduced by XSA-365 (bsc##1182294,
     bsc#1183646).


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 Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2021-1364=1

   - SUSE Linux Enterprise Live Patching 12-SP4:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2021-1347=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):

      kernel-livepatch-4_12_14-150_69-default-3-2.2
      kernel-livepatch-4_12_14-150_69-default-debuginfo-3-2.2

   - SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le x86_64):

      kgraft-patch-4_12_14-95_71-default-3-2.2


References:

   https://www.suse.com/security/cve/CVE-2021-28688.html
   https://www.suse.com/security/cve/CVE-2021-3444.html
   https://bugzilla.suse.com/1182294
   https://bugzilla.suse.com/1184171