SUSE-SU-2021:4039-1: important: Security update for the Linux Kernel (Live Patch 27 for SLE 15 SP1)

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

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 27 for SLE 15 SP1)
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Announcement ID:    SUSE-SU-2021:4039-1
Rating:             important
References:         #1192042 
Cross-References:   CVE-2021-0935
CVSS scores:
                    CVE-2021-0935 (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-SP1
                    SUSE Linux Enterprise Live Patching 12-SP5
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   An update that fixes one vulnerability is now available.

Description:

   This update for the Linux Kernel 4.12.14-197_102 fixes one issue.

   The following security issue was fixed:

   - CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of
     bounds write due to a use after free. This could lead to local
     escalation of privilege with System execution privileges needed. User
     interaction is not needed for exploitation. (bsc#1192032)


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-SP1:

      zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-4039=1

   - SUSE Linux Enterprise Live Patching 12-SP5:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-4020=1



Package List:

   - SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):

      kernel-livepatch-4_12_14-197_102-default-2-2.1

   - SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64):

      kgraft-patch-4_12_14-122_103-default-2-2.1


References:

   https://www.suse.com/security/cve/CVE-2021-0935.html
   https://bugzilla.suse.com/1192042