SUSE-SU-2021:1148-1: important: Security update for the Linux Kernel (Live Patch 40 for SLE 12 SP2)

[sle-security-updates at lists.suse.com]

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 40 for SLE 12 SP2)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:1148-1
Rating:             important
References:         #1165631 #1176931 #1177513 #1182717 #1183120 
                    #1183491 
Cross-References:   CVE-2020-0429 CVE-2020-1749 CVE-2020-25645
                    CVE-2021-27363 CVE-2021-27364 CVE-2021-27365
                   
CVSS scores:
                    CVE-2020-0429 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/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-2020-25645 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
                    CVE-2020-25645 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
                    CVE-2021-27363 (NVD) : 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
                    CVE-2021-27363 (SUSE): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
                    CVE-2021-27364 (NVD) : 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
                    CVE-2021-27364 (SUSE): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
                    CVE-2021-27365 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-27365 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Server 12-SP2-LTSS-SAP
                    SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON
______________________________________________________________________________

   An update that fixes 6 vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.4.121-92_152 fixes several issues.

   The following security issues were fixed:

   - CVE-2021-27365: Fixed an issue where data structures did not have
     appropriate length constraints or checks, and could exceed the PAGE_SIZE
     value (bsc#1183491).
   - CVE-2021-27363: Fixed a kernel pointer leak which could have been used
     to determine the address of the iscsi_transport structure (bsc#1183120).
   - CVE-2021-27364: Fixed an issue where an unprivileged user could  craft
     Netlink messages (bsc#1182717).
   - CVE-2020-25645: Fixed an an issue in IPsec that caused traffic between
     two Geneve endpoints to be unencrypted (bsc#1177513).
   - CVE-2020-0429: Fixed a memory corruption due to a use after free which
     could have led to local escalation of privilege with System execution
     privileges needed (bsc#1176931).
   - CVE-2020-1749:  Use ip6_dst_lookup_flow instead of  ip6_dst_lookup
     (bsc#1165631).


Patch Instructions:

   To install this SUSE Security 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-SP2-LTSS-SAP:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-SAP-2021-1148=1

   - SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON:

      zypper in -t patch SUSE-SLE-SERVER-12-SP2-LTSS-ERICSSON-2021-1148=1



Package List:

   - SUSE Linux Enterprise Server 12-SP2-LTSS-SAP (x86_64):

      kgraft-patch-4_4_121-92_152-default-2-2.2

   - SUSE Linux Enterprise Server 12-SP2-LTSS-ERICSSON (x86_64):

      kgraft-patch-4_4_121-92_152-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-2021-27363.html
   https://www.suse.com/security/cve/CVE-2021-27364.html
   https://www.suse.com/security/cve/CVE-2021-27365.html
   https://bugzilla.suse.com/1165631
   https://bugzilla.suse.com/1176931
   https://bugzilla.suse.com/1177513
   https://bugzilla.suse.com/1182717
   https://bugzilla.suse.com/1183120
   https://bugzilla.suse.com/1183491