SUSE Security Update: Security update for the Linux Kernel (Live Patch 6 for SLE 15 SP3)
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Announcement ID:    SUSE-SU-2021:4075-1
Rating:             important
References:         #1191813 
Cross-References:   CVE-2021-20322
CVSS scores:
                    CVE-2021-20322 (SUSE): 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15-SP3
                    SUSE Linux Enterprise Module for Live Patching 15-SP2
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   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 5.3.18-59_24 fixes one issue.

   The following security issue was fixed:

   - CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less
     predictive to avoid information leaks about UDP ports in use.
     (bsc#1191790)


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-SP3:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-4073=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4074=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4075=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4076=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4077=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4078=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4079=1 SUSE-SLE-Module-Live-Patching-15-SP3-2021-4080=1

   - SUSE Linux Enterprise Module for Live Patching 15-SP2:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-4072=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4081=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4082=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4083=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4084=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4085=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4087=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4088=1 SUSE-SLE-Module-Live-Patching-15-SP2-2021-4093=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x x86_64):

      kernel-livepatch-5_3_18-59_10-default-7-2.1
      kernel-livepatch-5_3_18-59_10-default-debuginfo-7-2.1
      kernel-livepatch-5_3_18-59_13-default-7-2.1
      kernel-livepatch-5_3_18-59_13-default-debuginfo-7-2.1
      kernel-livepatch-5_3_18-59_16-default-6-2.1
      kernel-livepatch-5_3_18-59_16-default-debuginfo-6-2.1
      kernel-livepatch-5_3_18-59_19-default-5-2.1
      kernel-livepatch-5_3_18-59_19-default-debuginfo-5-2.1
      kernel-livepatch-5_3_18-59_24-default-3-2.1
      kernel-livepatch-5_3_18-59_24-default-debuginfo-3-2.1
      kernel-livepatch-5_3_18-59_27-default-3-2.1
      kernel-livepatch-5_3_18-59_27-default-debuginfo-3-2.1
      kernel-livepatch-5_3_18-59_34-default-2-2.1
      kernel-livepatch-5_3_18-59_34-default-debuginfo-2-2.1
      kernel-livepatch-5_3_18-59_5-default-7-2.1
      kernel-livepatch-5_3_18-59_5-default-debuginfo-7-2.1
      kernel-livepatch-SLE15-SP3_Update_1-debugsource-7-2.1
      kernel-livepatch-SLE15-SP3_Update_2-debugsource-7-2.1
      kernel-livepatch-SLE15-SP3_Update_3-debugsource-7-2.1
      kernel-livepatch-SLE15-SP3_Update_4-debugsource-6-2.1
      kernel-livepatch-SLE15-SP3_Update_5-debugsource-5-2.1
      kernel-livepatch-SLE15-SP3_Update_6-debugsource-3-2.1
      kernel-livepatch-SLE15-SP3_Update_7-debugsource-3-2.1
      kernel-livepatch-SLE15-SP3_Update_9-debugsource-2-2.1

   - SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x x86_64):

      kernel-livepatch-5_3_18-24_61-default-9-2.1
      kernel-livepatch-5_3_18-24_61-default-debuginfo-9-2.1
      kernel-livepatch-5_3_18-24_64-default-9-2.1
      kernel-livepatch-5_3_18-24_64-default-debuginfo-9-2.1
      kernel-livepatch-5_3_18-24_67-default-7-2.1
      kernel-livepatch-5_3_18-24_67-default-debuginfo-7-2.1
      kernel-livepatch-5_3_18-24_70-default-7-2.1
      kernel-livepatch-5_3_18-24_70-default-debuginfo-7-2.1
      kernel-livepatch-5_3_18-24_75-default-6-2.1
      kernel-livepatch-5_3_18-24_75-default-debuginfo-6-2.1
      kernel-livepatch-5_3_18-24_78-default-5-2.1
      kernel-livepatch-5_3_18-24_78-default-debuginfo-5-2.1
      kernel-livepatch-5_3_18-24_83-default-3-2.1
      kernel-livepatch-5_3_18-24_83-default-debuginfo-3-2.1
      kernel-livepatch-5_3_18-24_86-default-3-2.1
      kernel-livepatch-5_3_18-24_86-default-debuginfo-3-2.1
      kernel-livepatch-5_3_18-24_93-default-2-2.1
      kernel-livepatch-5_3_18-24_93-default-debuginfo-2-2.1
      kernel-livepatch-SLE15-SP2_Update_12-debugsource-9-2.1
      kernel-livepatch-SLE15-SP2_Update_13-debugsource-9-2.1
      kernel-livepatch-SLE15-SP2_Update_14-debugsource-7-2.1
      kernel-livepatch-SLE15-SP2_Update_16-debugsource-7-2.1
      kernel-livepatch-SLE15-SP2_Update_17-debugsource-6-2.1
      kernel-livepatch-SLE15-SP2_Update_18-debugsource-5-2.1
      kernel-livepatch-SLE15-SP2_Update_19-debugsource-3-2.1
      kernel-livepatch-SLE15-SP2_Update_20-debugsource-3-2.1
      kernel-livepatch-SLE15-SP2_Update_21-debugsource-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2021-20322.html
   https://bugzilla.suse.com/1191813