Security update for the Linux Kernel (Live Patch 39 for SLE 12 SP2)

Announcement ID:	SUSE-SU-2021:0835-1
Rating:	important
References:	bsc#1165631 bsc#1176931 bsc#1177513 bsc#1178684 bsc#1179616
Cross-References:	CVE-2020-0429 CVE-2020-1749 CVE-2020-25645 CVE-2020-27786 CVE-2020-28374
CVSS scores:	CVE-2020-0429 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-0429 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2020-1749 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-1749 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-25645 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-25645 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVE-2020-27786 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-27786 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2020-28374 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVE-2020-28374 ( NVD ): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected Products:	SUSE Linux Enterprise High Performance Computing 12 SP2 SUSE Linux Enterprise High Performance Computing 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 12 SP3 ESPOS 12-SP3 SUSE Linux Enterprise Server 12 SP3 LTSS 12-SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP3

An update that solves five vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 4.4.121-92_149 fixes several issues.

The following security issues were fixed:

• CVE-2020-27786: Fixed a potential user after free which could have led to memory corruption or privilege escalation (bsc#1179616).
• CVE-2020-28374: Fixed insufficient identifier checking in the LIO SCSI target code which could have been used by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#1178684).
• CVE-2020-25645: Fixed an issue where the traffic between two Geneve endpoints may have been unencrypted when IPsec was configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted (bsc#1177513).
• CVE-2020-0429: Fixed a potential memory corruption due to a use after free which could have led local escalation of privilege with System execution privileges needed (bsc#1176931).
• CVE-2020-1749: Fixed an issue in some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6 where the kernel was not correctly routing tunneled data over the encrypted link rather sending the data unencrypted (bsc#1165631).

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 for SAP Applications 12 SP2
  zypper in -t patch SUSE-SLE-SAP-12-SP2-2021-835=1
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-ESPOS-2021-835=1
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2
  zypper in -t patch SUSE-SLE-SERVER-12-SP2-2021-835=1
• SUSE Linux Enterprise Server for SAP Applications 12 SP3
  zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-828=1
• SUSE Linux Enterprise Server 12 SP3 ESPOS 12-SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-ESPOS-2021-828=1
• SUSE Linux Enterprise Server 12 SP3 LTSS 12-SP3
  zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-828=1

Package List:

• SUSE Linux Enterprise Server for SAP Applications 12 SP2 (ppc64le x86_64)
  • kgraft-patch-4_4_121-92_149-default-2-2.2
• SUSE Linux Enterprise Server 12 SP2 ESPOS 12-SP2 (x86_64)
  • kgraft-patch-4_4_121-92_149-default-2-2.2
• SUSE Linux Enterprise Server 12 SP2 LTSS 12-SP2 (ppc64le x86_64)
  • kgraft-patch-4_4_121-92_149-default-2-2.2
• SUSE Linux Enterprise Server for SAP Applications 12 SP3 (ppc64le x86_64)
  • kgraft-patch-4_4_180-94_138-default-debuginfo-2-2.2
  • kgraft-patch-4_4_180-94_138-default-2-2.2
• SUSE Linux Enterprise Server 12 SP3 ESPOS 12-SP3 (x86_64)
  • kgraft-patch-4_4_180-94_138-default-debuginfo-2-2.2
  • kgraft-patch-4_4_180-94_138-default-2-2.2
• SUSE Linux Enterprise Server 12 SP3 LTSS 12-SP3 (ppc64le x86_64)
  • kgraft-patch-4_4_180-94_138-default-debuginfo-2-2.2
  • kgraft-patch-4_4_180-94_138-default-2-2.2

References:

• https://www.suse.com/security/cve/CVE-2020-0429.html
• https://www.suse.com/security/cve/CVE-2020-1749.html
• https://www.suse.com/security/cve/CVE-2020-25645.html
• https://www.suse.com/security/cve/CVE-2020-27786.html
• https://www.suse.com/security/cve/CVE-2020-28374.html
• https://bugzilla.suse.com/show_bug.cgi?id=1165631
• https://bugzilla.suse.com/show_bug.cgi?id=1176931
• https://bugzilla.suse.com/show_bug.cgi?id=1177513
• https://bugzilla.suse.com/show_bug.cgi?id=1178684
• https://bugzilla.suse.com/show_bug.cgi?id=1179616