SUSE-SU-2021:3738-1: important: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

[sle-updates at lists.suse.com]

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)
______________________________________________________________________________

Announcement ID:    SUSE-SU-2021:3738-1
Rating:             important
References:         #1190432 #1191318 #1191646 
Cross-References:   CVE-2021-34866 CVE-2021-3752 CVE-2021-41864
                   
CVSS scores:
                    CVE-2021-34866 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-3752 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
                    CVE-2021-41864 (SUSE): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:
                    SUSE Linux Enterprise Module for Live Patching 15-SP3
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   An update that fixes three vulnerabilities is now available.

Description:

   This update for the Linux Kernel 5.3.18-57 fixes several issues.

   The following security issues were fixed:

   - CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf
     module (bsc#1190432).
   - CVE-2021-34866: Fixed possible eBPF Type Confusion privilege escalation
     vulnerability via eBPF type confusion (bsc#1191646).
   - CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds
     write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c
     (bsc#1191318).


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-SP3:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-3738=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x x86_64):

      kernel-livepatch-5_3_18-57-default-8-3.2
      kernel-livepatch-5_3_18-57-default-debuginfo-8-3.2
      kernel-livepatch-SLE15-SP3_Update_0-debugsource-8-3.2


References:

   https://www.suse.com/security/cve/CVE-2021-34866.html
   https://www.suse.com/security/cve/CVE-2021-3752.html
   https://www.suse.com/security/cve/CVE-2021-41864.html
   https://bugzilla.suse.com/1190432
   https://bugzilla.suse.com/1191318
   https://bugzilla.suse.com/1191646