Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2020:2576-1
Rating:	important
References:	bsc#1152107 bsc#1173798 bsc#1174205 bsc#1174757 bsc#1175691 bsc#1176069
Cross-References:	CVE-2019-16746 CVE-2020-14314 CVE-2020-14331 CVE-2020-14386 CVE-2020-16166
CVSS scores:	CVE-2019-16746 ( SUSE ): 7.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVE-2019-16746 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-14314 ( SUSE ): 2.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L CVE-2020-14314 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2020-14331 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14331 ( NVD ): 6.6 CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14386 ( SUSE ): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVE-2020-14386 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-14386 ( NVD ): 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-16166 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-16166 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Products:	SUSE Linux Enterprise High Availability Extension 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise High Performance Computing 12 SP3 SUSE Linux Enterprise High Performance Computing 12 SP4 SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 SUSE Linux Enterprise Server 12 SP2 SUSE Linux Enterprise Server 12 SP2 BCL 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 12 SP4 SUSE Linux Enterprise Server 12 SP5 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 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP5 SUSE OpenStack Cloud 7

An update that solves five vulnerabilities and has one security fix can now be installed.

Description:

The SUSE Linux Enterprise 12 SP2 kernel was updated to to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2020-14314: Fixed a potential negative array index in do_split() (bsc#1173798).
• CVE-2020-14331: Fixed a missing check in vgacon scrollback handling (bsc#1174205).
• CVE-2020-16166: Fixed a potential issue which could have allowed remote attackers to make observations that help to obtain sensitive information about the internal state of the network RNG (bsc#1174757).
• CVE-2019-16746: Fixed an improper check of the length of variable elements in a beacon head, leading to a buffer overflow (bsc#1152107).
• CVE-2020-14386: Fixed a potential local privilege escalation via memory corruption (bsc#1176069).

The following non-security bug was fixed:

• mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo (bsc#1175691).

Special Instructions and Notes:

• Please reboot the system after installing this update.

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 OpenStack Cloud 7
  zypper in -t patch SUSE-OpenStack-Cloud-7-2020-2576=1
• SUSE Linux Enterprise High Availability Extension 12 SP2
  zypper in -t patch SUSE-SLE-HA-12-SP2-2020-2576=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-HA-12-SP2-2020-2576=1 SUSE-SLE-SAP-12-SP2-2020-2576=1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2
  zypper in -t patch SUSE-SLE-POS-12-SP2-CLIENT-2020-2576=1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-2576=1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-ESPOS-2020-2576=1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-2576=1

Package List:

• SUSE OpenStack Cloud 7 (nosrc x86_64)
  • kernel-default-4.4.121-92.141.1
• SUSE OpenStack Cloud 7 (x86_64)
  • kernel-default-debuginfo-4.4.121-92.141.1
  • kernel-default-base-debuginfo-4.4.121-92.141.1
  • kgraft-patch-4_4_121-92_141-default-1-3.3.1
  • kernel-default-devel-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • kernel-syms-4.4.121-92.141.1
  • kernel-default-base-4.4.121-92.141.1
• SUSE OpenStack Cloud 7 (noarch)
  • kernel-macros-4.4.121-92.141.1
  • kernel-devel-4.4.121-92.141.1
  • kernel-source-4.4.121-92.141.1
• SUSE Linux Enterprise High Availability Extension 12 SP2 (ppc64le s390x x86_64)
  • dlm-kmp-default-4.4.121-92.141.1
  • kernel-default-debuginfo-4.4.121-92.141.1
  • ocfs2-kmp-default-4.4.121-92.141.1
  • ocfs2-kmp-default-debuginfo-4.4.121-92.141.1
  • cluster-network-kmp-default-debuginfo-4.4.121-92.141.1
  • cluster-md-kmp-default-4.4.121-92.141.1
  • cluster-md-kmp-default-debuginfo-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • cluster-network-kmp-default-4.4.121-92.141.1
  • gfs2-kmp-default-debuginfo-4.4.121-92.141.1
  • gfs2-kmp-default-4.4.121-92.141.1
  • dlm-kmp-default-debuginfo-4.4.121-92.141.1
• SUSE Linux Enterprise High Availability Extension 12 SP2 (nosrc)
  • kernel-default-4.4.121-92.141.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (ppc64le x86_64)
  • dlm-kmp-default-4.4.121-92.141.1
  • kernel-default-debuginfo-4.4.121-92.141.1
  • ocfs2-kmp-default-4.4.121-92.141.1
  • kernel-default-base-debuginfo-4.4.121-92.141.1
  • kgraft-patch-4_4_121-92_141-default-1-3.3.1
  • kernel-default-devel-4.4.121-92.141.1
  • ocfs2-kmp-default-debuginfo-4.4.121-92.141.1
  • cluster-network-kmp-default-debuginfo-4.4.121-92.141.1
  • cluster-md-kmp-default-4.4.121-92.141.1
  • cluster-md-kmp-default-debuginfo-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • kernel-syms-4.4.121-92.141.1
  • cluster-network-kmp-default-4.4.121-92.141.1
  • gfs2-kmp-default-debuginfo-4.4.121-92.141.1
  • gfs2-kmp-default-4.4.121-92.141.1
  • kernel-default-base-4.4.121-92.141.1
  • dlm-kmp-default-debuginfo-4.4.121-92.141.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (nosrc ppc64le x86_64)
  • kernel-default-4.4.121-92.141.1
• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (noarch)
  • kernel-macros-4.4.121-92.141.1
  • kernel-devel-4.4.121-92.141.1
  • kernel-source-4.4.121-92.141.1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 (nosrc x86_64)
  • kernel-default-4.4.121-92.141.1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 (x86_64)
  • kernel-default-debuginfo-4.4.121-92.141.1
  • kernel-default-base-debuginfo-4.4.121-92.141.1
  • kgraft-patch-4_4_121-92_141-default-1-3.3.1
  • kernel-default-devel-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • kernel-syms-4.4.121-92.141.1
  • kernel-default-base-4.4.121-92.141.1
• SUSE Linux Enterprise Point of Service Image Server 12 12-SP2 (noarch)
  • kernel-macros-4.4.121-92.141.1
  • kernel-devel-4.4.121-92.141.1
  • kernel-source-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (nosrc x86_64)
  • kernel-default-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (x86_64)
  • kernel-default-debuginfo-4.4.121-92.141.1
  • kernel-default-base-debuginfo-4.4.121-92.141.1
  • kernel-default-devel-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • kernel-syms-4.4.121-92.141.1
  • kernel-default-base-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 BCL 12-SP2 (noarch)
  • kernel-macros-4.4.121-92.141.1
  • kernel-devel-4.4.121-92.141.1
  • kernel-source-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (nosrc x86_64)
  • kernel-default-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (x86_64)
  • kernel-default-debuginfo-4.4.121-92.141.1
  • kernel-default-base-debuginfo-4.4.121-92.141.1
  • kgraft-patch-4_4_121-92_141-default-1-3.3.1
  • kernel-default-devel-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • kernel-syms-4.4.121-92.141.1
  • kernel-default-base-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (noarch)
  • kernel-macros-4.4.121-92.141.1
  • kernel-devel-4.4.121-92.141.1
  • kernel-source-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (nosrc ppc64le s390x x86_64)
  • kernel-default-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (ppc64le s390x x86_64)
  • kernel-default-debuginfo-4.4.121-92.141.1
  • kernel-default-base-debuginfo-4.4.121-92.141.1
  • kernel-default-devel-4.4.121-92.141.1
  • kernel-default-debugsource-4.4.121-92.141.1
  • kernel-syms-4.4.121-92.141.1
  • kernel-default-base-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (noarch)
  • kernel-macros-4.4.121-92.141.1
  • kernel-devel-4.4.121-92.141.1
  • kernel-source-4.4.121-92.141.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (ppc64le x86_64)
  • kgraft-patch-4_4_121-92_141-default-1-3.3.1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (s390x)
  • kernel-default-man-4.4.121-92.141.1

References:

• https://www.suse.com/security/cve/CVE-2019-16746.html
• https://www.suse.com/security/cve/CVE-2020-14314.html
• https://www.suse.com/security/cve/CVE-2020-14331.html
• https://www.suse.com/security/cve/CVE-2020-14386.html
• https://www.suse.com/security/cve/CVE-2020-16166.html
• https://bugzilla.suse.com/show_bug.cgi?id=1152107
• https://bugzilla.suse.com/show_bug.cgi?id=1173798
• https://bugzilla.suse.com/show_bug.cgi?id=1174205
• https://bugzilla.suse.com/show_bug.cgi?id=1174757
• https://bugzilla.suse.com/show_bug.cgi?id=1175691
• https://bugzilla.suse.com/show_bug.cgi?id=1176069