Security update for the Linux Kernel (Live Patch 26 for SLE 12)

Announcement ID:	SUSE-SU-2018:2352-1
Rating:	important
References:	bsc#1096564 bsc#1097108 bsc#1099306
Cross-References:	CVE-2017-11600 CVE-2018-10853 CVE-2018-3646
CVSS scores:	CVE-2017-11600 ( SUSE ): 7.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H CVE-2017-11600 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2017-11600 ( NVD ): 7.0 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2018-10853 ( SUSE ): 8.4 CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2018-10853 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2018-3646 ( SUSE ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N CVE-2018-3646 ( NVD ): 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected Products:	SUSE Linux Enterprise Server 12 SUSE Linux Enterprise Server 12 LTSS 12 SUSE Linux Enterprise Server 12 SP1 SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 SUSE Linux Enterprise Server for SAP Applications 12 SUSE Linux Enterprise Server for SAP Applications 12 SP1

An update that solves three vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 3.12.61-52_89 fixes several issues.

The following security issues were fixed:

• CVE-2018-3646: Local attackers in virtualized guest systems could use speculative code patterns on hyperthreaded processors to read data present in the L1 Datacache used by other hyperthreads on the same CPU core, potentially leaking sensitive data, even from other virtual machines or the host system (bsc#1099306).
• CVE-2017-11600: net/xfrm/xfrm_policy.c did not ensure that the dir value of xfrm_userpolicy_id is XFRM_POLICY_MAX or less, which allowed local users to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via an XFRM_MSG_MIGRATE xfrm Netlink message (bsc#1096564)
• CVE-2018-10853: A flaw was found in kvm. In which certain instructions such as sgdt/sidt call segmented_write_std didn't propagate access correctly. As such, during userspace induced exception, the guest can incorrectly assume that the exception happened in the kernel and panic. (bsc#1097108).

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 Server 12 LTSS 12
  zypper in -t patch SUSE-SLE-SERVER-12-2018-1589=1 SUSE-SLE-SERVER-12-2018-1590=1 SUSE-SLE-SERVER-12-2018-1591=1 SUSE-SLE-SERVER-12-2018-1588=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP1
  zypper in -t patch SUSE-SLE-SAP-12-SP1-2018-1601=1 SUSE-SLE-SAP-12-SP1-2018-1598=1 SUSE-SLE-SAP-12-SP1-2018-1599=1 SUSE-SLE-SAP-12-SP1-2018-1600=1
• SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1
  zypper in -t patch SUSE-SLE-SERVER-12-SP1-2018-1600=1 SUSE-SLE-SERVER-12-SP1-2018-1601=1 SUSE-SLE-SERVER-12-SP1-2018-1598=1 SUSE-SLE-SERVER-12-SP1-2018-1599=1

Package List:

• SUSE Linux Enterprise Server 12 LTSS 12 (x86_64)
  • kgraft-patch-3_12_61-52_89-default-11-2.1
  • kgraft-patch-3_12_61-52_92-xen-10-2.1
  • kgraft-patch-3_12_61-52_92-default-10-2.1
  • kgraft-patch-3_12_61-52_101-default-8-2.1
  • kgraft-patch-3_12_61-52_101-xen-8-2.1
  • kgraft-patch-3_12_61-52_106-default-8-2.1
  • kgraft-patch-3_12_61-52_89-xen-11-2.1
  • kgraft-patch-3_12_61-52_106-xen-8-2.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP1 (x86_64)
  • kgraft-patch-3_12_74-60_64_60-xen-10-2.1
  • kgraft-patch-3_12_74-60_64_63-xen-8-2.1
  • kgraft-patch-3_12_74-60_64_57-default-11-2.1
  • kgraft-patch-3_12_74-60_64_66-default-7-2.1
  • kgraft-patch-3_12_74-60_64_66-xen-7-2.1
  • kgraft-patch-3_12_74-60_64_57-xen-11-2.1
  • kgraft-patch-3_12_74-60_64_63-default-8-2.1
  • kgraft-patch-3_12_74-60_64_60-default-10-2.1
• SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (x86_64)
  • kgraft-patch-3_12_74-60_64_60-xen-10-2.1
  • kgraft-patch-3_12_74-60_64_63-xen-8-2.1
  • kgraft-patch-3_12_74-60_64_57-default-11-2.1
  • kgraft-patch-3_12_74-60_64_66-default-7-2.1
  • kgraft-patch-3_12_74-60_64_66-xen-7-2.1
  • kgraft-patch-3_12_74-60_64_57-xen-11-2.1
  • kgraft-patch-3_12_74-60_64_63-default-8-2.1
  • kgraft-patch-3_12_74-60_64_60-default-10-2.1

References:

• https://www.suse.com/security/cve/CVE-2017-11600.html
• https://www.suse.com/security/cve/CVE-2018-10853.html
• https://www.suse.com/security/cve/CVE-2018-3646.html
• https://bugzilla.suse.com/show_bug.cgi?id=1096564
• https://bugzilla.suse.com/show_bug.cgi?id=1097108
• https://bugzilla.suse.com/show_bug.cgi?id=1099306