Security update for the Linux Kernel (Live Patch 37 for SLE 12 SP3)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 37 for SLE 12 SP3)
Announcement ID: SUSE-SU-2021:4057-1
Rating: important
References: #1191813
Cross-References:CVE-2021-20322
Affected Products:
  • SUSE Linux Enterprise Server for SAP 12-SP3
  • SUSE Linux Enterprise Server 12-SP3-LTSS

An update that fixes one vulnerability is now available.

Description:

This update for the Linux Kernel 4.4.180-94_138 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 Server for SAP 12-SP3:
    zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-4053=1 SUSE-SLE-SAP-12-SP3-2021-4054=1 SUSE-SLE-SAP-12-SP3-2021-4055=1 SUSE-SLE-SAP-12-SP3-2021-4057=1
  • SUSE Linux Enterprise Server 12-SP3-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-4053=1 SUSE-SLE-SERVER-12-SP3-2021-4054=1 SUSE-SLE-SERVER-12-SP3-2021-4055=1 SUSE-SLE-SERVER-12-SP3-2021-4057=1

Package List:

  • SUSE Linux Enterprise Server for SAP 12-SP3 (ppc64le x86_64):
    • kgraft-patch-4_4_180-94_138-default-13-2.2
    • kgraft-patch-4_4_180-94_138-default-debuginfo-13-2.2
    • kgraft-patch-4_4_180-94_141-default-12-2.2
    • kgraft-patch-4_4_180-94_141-default-debuginfo-12-2.2
    • kgraft-patch-4_4_180-94_144-default-9-2.1
    • kgraft-patch-4_4_180-94_144-default-debuginfo-9-2.1
    • kgraft-patch-4_4_180-94_147-default-6-2.1
    • kgraft-patch-4_4_180-94_147-default-debuginfo-6-2.1
  • SUSE Linux Enterprise Server 12-SP3-LTSS (ppc64le x86_64):
    • kgraft-patch-4_4_180-94_138-default-13-2.2
    • kgraft-patch-4_4_180-94_138-default-debuginfo-13-2.2
    • kgraft-patch-4_4_180-94_141-default-12-2.2
    • kgraft-patch-4_4_180-94_141-default-debuginfo-12-2.2
    • kgraft-patch-4_4_180-94_144-default-9-2.1
    • kgraft-patch-4_4_180-94_144-default-debuginfo-9-2.1
    • kgraft-patch-4_4_180-94_147-default-6-2.1
    • kgraft-patch-4_4_180-94_147-default-debuginfo-6-2.1

References: