SUSE Security Update: Security update for the Linux Kernel (Live Patch 23 for SLE 15 SP1)
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Announcement ID:    SUSE-SU-2021:4038-1
Rating:             important
References:         #1191813 #1192048 
Cross-References:   CVE-2021-0941 CVE-2021-20322
CVSS scores:
                    CVE-2021-0941 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
                    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-SP1
                    SUSE Linux Enterprise Module for Live Patching 15
                    SUSE Linux Enterprise Live Patching 12-SP5
                    SUSE Linux Enterprise Live Patching 12-SP4
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   An update that fixes two vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.12.14-197_86 fixes several issues.

   The following security issues were fixed:

   - CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible
     out of bounds read due to a use after free. This could lead to local
     escalation of privilege with System execution privileges needed. User
     interaction is not needed for exploitation (bnc#1192045).
   - 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-SP1:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-4040=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4041=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4042=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4043=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4044=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4045=1 SUSE-SLE-Module-Live-Patching-15-SP1-2021-4046=1

   - SUSE Linux Enterprise Module for Live Patching 15:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2021-4047=1 SUSE-SLE-Module-Live-Patching-15-2021-4048=1 SUSE-SLE-Module-Live-Patching-15-2021-4049=1 SUSE-SLE-Module-Live-Patching-15-2021-4050=1

   - SUSE Linux Enterprise Live Patching 12-SP5:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-4022=1 SUSE-SLE-Live-Patching-12-SP5-2021-4023=1 SUSE-SLE-Live-Patching-12-SP5-2021-4024=1 SUSE-SLE-Live-Patching-12-SP5-2021-4025=1 SUSE-SLE-Live-Patching-12-SP5-2021-4026=1 SUSE-SLE-Live-Patching-12-SP5-2021-4027=1 SUSE-SLE-Live-Patching-12-SP5-2021-4028=1 SUSE-SLE-Live-Patching-12-SP5-2021-4029=1 SUSE-SLE-Live-Patching-12-SP5-2021-4030=1 SUSE-SLE-Live-Patching-12-SP5-2021-4031=1 SUSE-SLE-Live-Patching-12-SP5-2021-4032=1 SUSE-SLE-Live-Patching-12-SP5-2021-4033=1

   - SUSE Linux Enterprise Live Patching 12-SP4:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP4-2021-4034=1 SUSE-SLE-Live-Patching-12-SP4-2021-4035=1 SUSE-SLE-Live-Patching-12-SP4-2021-4036=1 SUSE-SLE-Live-Patching-12-SP4-2021-4037=1 SUSE-SLE-Live-Patching-12-SP4-2021-4038=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):

      kernel-livepatch-4_12_14-197_75-default-14-2.2
      kernel-livepatch-4_12_14-197_78-default-14-2.2
      kernel-livepatch-4_12_14-197_83-default-13-2.2
      kernel-livepatch-4_12_14-197_86-default-12-2.2
      kernel-livepatch-4_12_14-197_89-default-9-2.1
      kernel-livepatch-4_12_14-197_92-default-8-2.1
      kernel-livepatch-4_12_14-197_99-default-6-2.1

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

      kernel-livepatch-4_12_14-150_66-default-13-2.2
      kernel-livepatch-4_12_14-150_66-default-debuginfo-13-2.2
      kernel-livepatch-4_12_14-150_69-default-12-2.2
      kernel-livepatch-4_12_14-150_69-default-debuginfo-12-2.2
      kernel-livepatch-4_12_14-150_72-default-9-2.1
      kernel-livepatch-4_12_14-150_72-default-debuginfo-9-2.1
      kernel-livepatch-4_12_14-150_75-default-6-2.1
      kernel-livepatch-4_12_14-150_75-default-debuginfo-6-2.1

   - SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64):

      kgraft-patch-4_12_14-122_54-default-14-2.2
      kgraft-patch-4_12_14-122_57-default-14-2.2
      kgraft-patch-4_12_14-122_60-default-13-2.2
      kgraft-patch-4_12_14-122_63-default-12-2.2
      kgraft-patch-4_12_14-122_66-default-10-2.1
      kgraft-patch-4_12_14-122_71-default-9-2.1
      kgraft-patch-4_12_14-122_74-default-7-2.1
      kgraft-patch-4_12_14-122_77-default-7-2.1
      kgraft-patch-4_12_14-122_80-default-6-2.1
      kgraft-patch-4_12_14-122_83-default-5-2.1
      kgraft-patch-4_12_14-122_88-default-3-2.1
      kgraft-patch-4_12_14-122_91-default-3-2.1

   - SUSE Linux Enterprise Live Patching 12-SP4 (ppc64le s390x x86_64):

      kgraft-patch-4_12_14-95_68-default-13-2.2
      kgraft-patch-4_12_14-95_71-default-12-2.2
      kgraft-patch-4_12_14-95_74-default-9-2.1
      kgraft-patch-4_12_14-95_77-default-8-2.1
      kgraft-patch-4_12_14-95_80-default-6-2.1


References:

   https://www.suse.com/security/cve/CVE-2021-0941.html
   https://www.suse.com/security/cve/CVE-2021-20322.html
   https://bugzilla.suse.com/1191813
   https://bugzilla.suse.com/1192048