SUSE Security Update: Security update for the Linux Kernel (Live Patch 13
 for SLE 15 SP2)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:2027-1
Rating:             important
References:         #1185847 #1186061 #1186285 #1186498 
Cross-References:   CVE-2021-23134 CVE-2021-33034 CVE-2021-33200
                   
CVSS scores:
                    CVE-2021-23134 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-23134 (SUSE): 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-33034 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-33034 (SUSE): 7.7
 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
                    CVE-2021-33200 (NVD) : 7.8
 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-33200 (SUSE): 8.4
 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15-SP2
______________________________________________________________________________

   An update that solves three vulnerabilities and has one
   errata is now available.

Description:

   This update for the Linux Kernel 5.3.18-24_64 fixes several issues.

   The following issues were fixed:

   - CVE-2021-33200: Enforcing incorrect limits for pointer arithmetic
     operations by the BPF verifier could be abused to perform out-of-bounds
     reads and writes in kernel memory (bsc#1186484).
   - CVE-2021-33034: Fixed a use-after-free when destroying an hci_chan. This
     could lead to writing an arbitrary values (bsc#1186111).
   - CVE-2021-23134: A Use After Free vulnerability in nfc sockets allowed
     local attackers to elevate their privileges (bnc#1186060).
   - Fixed a data loss/data corruption that occurs if there is a write error
     on an md/raid array (bsc#1185680).


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 Module for Live Patching 15-SP2:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-2027=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
 x86_64):

      kernel-livepatch-5_3_18-24_64-default-2-2.1
      kernel-livepatch-5_3_18-24_64-default-debuginfo-2-2.1
      kernel-livepatch-SLE15-SP2_Update_13-debugsource-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2021-23134.html
   https://www.suse.com/security/cve/CVE-2021-33034.html
   https://www.suse.com/security/cve/CVE-2021-33200.html
   https://bugzilla.suse.com/1185847
   https://bugzilla.suse.com/1186061
   https://bugzilla.suse.com/1186285
   https://bugzilla.suse.com/1186498