Security update for the Linux Kernel (Live Patch 0 for SLE 15)

Announcement ID:	SUSE-SU-2018:3880-1
Rating:	important
References:	bsc#1103098 bsc#1112039
Cross-References:	CVE-2018-18386 CVE-2018-5391
CVSS scores:	CVE-2018-18386 ( SUSE ): 6.2 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2018-18386 ( NVD ): 3.3 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVE-2018-5391 ( SUSE ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2018-5391 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2018-5391 ( NVD ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:	SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP3 SUSE Linux Enterprise High Performance Computing 15 SUSE Linux Enterprise Live Patching 15 SUSE Linux Enterprise Live Patching 12-SP3 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 SUSE Linux Enterprise Server 12 SP3 SUSE Linux Enterprise Server 15 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP3 SUSE Linux Enterprise Server for SAP Applications 15

An update that solves two vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 4.12.14-23 fixes several issues.

The following security issues were 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).
• CVE-2018-18386: The drivers/tty/n_tty.c allowed local attackers (who are able to access pseudo terminals) to hang/block further usage of any pseudo terminal devices due to an EXTPROC versus ICANON confusion in TIOCINQ (bsc#1112039).

Patch Instructions:

To install this SUSE 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 Live Patching 15
  zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2018-2768=1
• SUSE Linux Enterprise Live Patching 12-SP3
  zypper in -t patch SUSE-SLE-Live-Patching-12-SP3-2018-2749=1 SUSE-SLE-Live-Patching-12-SP3-2018-2748=1 SUSE-SLE-Live-Patching-12-SP3-2018-2747=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-2694=1 SUSE-SLE-SAP-12-SP2-2018-2696=1 SUSE-SLE-SAP-12-SP2-2018-2695=1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-ESPOS-2018-2695=1 SUSE-SLE-SERVER-12-SP2-ESPOS-2018-2694=1 SUSE-SLE-SERVER-12-SP2-ESPOS-2018-2696=1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-2695=1 SUSE-SLE-SERVER-12-SP2-2018-2694=1 SUSE-SLE-SERVER-12-SP2-2018-2696=1

Package List:

• SUSE Linux Enterprise Live Patching 15 (ppc64le x86_64)
  • kernel-livepatch-4_12_14-23-default-debuginfo-6-16.2
  • kernel-livepatch-4_12_14-23-default-6-16.2
  • kernel-livepatch-SLE15_Update_0-debugsource-6-16.2
• SUSE Linux Enterprise Live Patching 12-SP3 (ppc64le x86_64)
  • kgraft-patch-4_4_92-6_30-default-11-2.1
  • kgraft-patch-4_4_103-6_38-default-11-2.1
  • kgraft-patch-4_4_92-6_30-default-debuginfo-11-2.1
  • kgraft-patch-4_4_103-6_38-default-debuginfo-11-2.1
  • kgraft-patch-4_4_103-6_33-default-debuginfo-11-2.1
  • kgraft-patch-4_4_103-6_33-default-11-2.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (x86_64)
  • kgraft-patch-4_4_90-92_50-default-12-2.1
  • kgraft-patch-4_4_103-92_53-default-11-2.1
  • kgraft-patch-4_4_103-92_56-default-11-2.1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (x86_64)
  • kgraft-patch-4_4_90-92_50-default-12-2.1
  • kgraft-patch-4_4_103-92_53-default-11-2.1
  • kgraft-patch-4_4_103-92_56-default-11-2.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (x86_64)
  • kgraft-patch-4_4_90-92_50-default-12-2.1
  • kgraft-patch-4_4_103-92_53-default-11-2.1
  • kgraft-patch-4_4_103-92_56-default-11-2.1

References:

• https://www.suse.com/security/cve/CVE-2018-18386.html
• https://www.suse.com/security/cve/CVE-2018-5391.html
• https://bugzilla.suse.com/show_bug.cgi?id=1103098
• https://bugzilla.suse.com/show_bug.cgi?id=1112039