Security update for the Linux Kernel (Live Patch 21 for SLE 12 SP2)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 21 for SLE 12 SP2)
Announcement ID: SUSE-SU-2018:3792-1
Rating: important
References: #1103098
Cross-References: CVE-2018-5391
Affected Products:
  • SUSE Linux Enterprise Server for SAP 12-SP2
  • SUSE Linux Enterprise Server 12-SP2-LTSS

An update that fixes one vulnerability is now available.

Description:

This update for the Linux Kernel 4.4.121-92_73 fixes one issue.
The following security issue was fixed:

  • CVE-2018-5391: Fixed a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker may have caused a denial of service condition by sending specially crafted IP fragments. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098).

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-SP2:
    zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-2689=1 SUSE-SLE-SAP-12-SP2-2018-2690=1 SUSE-SLE-SAP-12-SP2-2018-2691=1 SUSE-SLE-SAP-12-SP2-2018-2692=1 SUSE-SLE-SAP-12-SP2-2018-2693=1 SUSE-SLE-SAP-12-SP2-2018-2697=1
  • SUSE Linux Enterprise Server 12-SP2-LTSS:
    zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-2689=1 SUSE-SLE-SERVER-12-SP2-2018-2690=1 SUSE-SLE-SERVER-12-SP2-2018-2691=1 SUSE-SLE-SERVER-12-SP2-2018-2692=1 SUSE-SLE-SERVER-12-SP2-2018-2693=1 SUSE-SLE-SERVER-12-SP2-2018-2697=1

Package List:

  • SUSE Linux Enterprise Server for SAP 12-SP2 (x86_64):
    • kgraft-patch-4_4_114-92_64-default-9-2.1
    • kgraft-patch-4_4_114-92_67-default-9-2.1
    • kgraft-patch-4_4_120-92_70-default-8-2.1
    • kgraft-patch-4_4_121-92_73-default-7-2.1
    • kgraft-patch-4_4_121-92_80-default-7-2.1
    • kgraft-patch-4_4_121-92_85-default-5-2.1
  • SUSE Linux Enterprise Server 12-SP2-LTSS (x86_64):
    • kgraft-patch-4_4_114-92_64-default-9-2.1
    • kgraft-patch-4_4_114-92_67-default-9-2.1
    • kgraft-patch-4_4_120-92_70-default-8-2.1
    • kgraft-patch-4_4_121-92_73-default-7-2.1
    • kgraft-patch-4_4_121-92_80-default-7-2.1
    • kgraft-patch-4_4_121-92_85-default-5-2.1

References: