Security update for the Linux Kernel (Live Patch 38 for SLE 12)

Announcement ID:	SUSE-SU-2019:1668-1
Rating:	important
References:	bsc#1133191 bsc#1136446 bsc#1137597
Cross-References:	CVE-2019-11477 CVE-2019-11478 CVE-2019-11487 CVE-2019-3846
CVSS scores:	CVE-2019-11477 ( SUSE ): 8.2 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVE-2019-11477 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2019-11477 ( NVD ): 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2019-11478 ( SUSE ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2019-11478 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVE-2019-11487 ( SUSE ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2019-11487 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2019-11487 ( NVD ): 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2019-3846 ( SUSE ): 7.5 CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2019-3846 ( NVD ): 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2019-3846 ( NVD ): 8.0 CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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 four vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 3.12.61-52_146 fixes several issues.

The following security issues were fixed:

• CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network (bsc#1136446).
• CVE-2019-11477: A sequence of SACKs may have been crafted by a remote attacker such that one can trigger an integer overflow, leading to a kernel panic. (bsc#1137586).
• CVE-2019-11478: It was possible to send a crafted sequence of SACKs which would fragment the TCP retransmission queue. A remote attacker may have been able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. (bsc#1137586)
• CVE-2019-11487: The Linux kernel allowed page->_refcount reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can occur with FUSE requests (bsc#1133191).

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-12-2019-1667=1 SUSE-SLE-SERVER-12-2019-1681=1 SUSE-SLE-SERVER-12-2019-1665=1 SUSE-SLE-SERVER-12-2019-1680=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP1
  zypper in -t patch SUSE-SLE-SAP-12-SP1-2019-1664=1 SUSE-SLE-SAP-12-SP1-2019-1668=1 SUSE-SLE-SAP-12-SP1-2019-1652=1 SUSE-SLE-SAP-12-SP1-2019-1651=1 SUSE-SLE-SAP-12-SP1-2019-1650=1
• SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1
  zypper in -t patch SUSE-SLE-SERVER-12-SP1-2019-1664=1 SUSE-SLE-SERVER-12-SP1-2019-1668=1 SUSE-SLE-SERVER-12-SP1-2019-1652=1 SUSE-SLE-SERVER-12-SP1-2019-1651=1 SUSE-SLE-SERVER-12-SP1-2019-1650=1

Package List:

• SUSE Linux Enterprise Server 12 LTSS 12 (x86_64)
  • kgraft-patch-3_12_61-52_141-default-9-2.1
  • kgraft-patch-3_12_61-52_146-xen-7-2.1
  • kgraft-patch-3_12_61-52_146-default-7-2.1
  • kgraft-patch-3_12_61-52_149-default-3-2.1
  • kgraft-patch-3_12_61-52_141-xen-9-2.1
  • kgraft-patch-3_12_61-52_136-default-11-2.1
  • kgraft-patch-3_12_61-52_149-xen-3-2.1
  • kgraft-patch-3_12_61-52_136-xen-11-2.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP1 (x86_64)
  • kgraft-patch-3_12_74-60_64_99-default-9-2.1
  • kgraft-patch-3_12_74-60_64_107-default-7-2.1
  • kgraft-patch-3_12_74-60_64_110-xen-3-2.1
  • kgraft-patch-3_12_74-60_64_104-xen-7-2.1
  • kgraft-patch-3_12_74-60_64_110-default-3-2.1
  • kgraft-patch-3_12_74-60_64_96-default-11-2.1
  • kgraft-patch-3_12_74-60_64_107-xen-7-2.1
  • kgraft-patch-3_12_74-60_64_96-xen-11-2.1
  • kgraft-patch-3_12_74-60_64_99-xen-9-2.1
  • kgraft-patch-3_12_74-60_64_104-default-7-2.1
• SUSE Linux Enterprise Server 12 SP1 LTSS 12-SP1 (x86_64)
  • kgraft-patch-3_12_74-60_64_99-default-9-2.1
  • kgraft-patch-3_12_74-60_64_107-default-7-2.1
  • kgraft-patch-3_12_74-60_64_110-xen-3-2.1
  • kgraft-patch-3_12_74-60_64_104-xen-7-2.1
  • kgraft-patch-3_12_74-60_64_110-default-3-2.1
  • kgraft-patch-3_12_74-60_64_96-default-11-2.1
  • kgraft-patch-3_12_74-60_64_107-xen-7-2.1
  • kgraft-patch-3_12_74-60_64_96-xen-11-2.1
  • kgraft-patch-3_12_74-60_64_99-xen-9-2.1
  • kgraft-patch-3_12_74-60_64_104-default-7-2.1

References:

• https://www.suse.com/security/cve/CVE-2019-11477.html
• https://www.suse.com/security/cve/CVE-2019-11478.html
• https://www.suse.com/security/cve/CVE-2019-11487.html
• https://www.suse.com/security/cve/CVE-2019-3846.html
• https://bugzilla.suse.com/show_bug.cgi?id=1133191
• https://bugzilla.suse.com/show_bug.cgi?id=1136446
• https://bugzilla.suse.com/show_bug.cgi?id=1137597