SUSE-SU-2021:1046-1: important: Security update for the Linux Kernel (Live Patch 16 for SLE 12 SP5)

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

   SUSE Security Update: Security update for the Linux Kernel (Live Patch 16 for SLE 12 SP5)
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Announcement ID:    SUSE-SU-2021:1046-1
Rating:             important
References:         #1179664 #1182717 #1183120 #1183491 
Cross-References:   CVE-2020-29368 CVE-2021-27363 CVE-2021-27364
                    CVE-2021-27365
CVSS scores:
                    CVE-2020-29368 (NVD) : 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    CVE-2020-29368 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
                    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 Live Patching 12-SP5
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   An update that fixes four vulnerabilities is now available.

Description:

   This update for the Linux Kernel 4.12.14-122_63 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-2020-29368: Fixed a race condition in a THP mapcount check
     (bsc#1179664).


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 Live Patching 12-SP5:

      zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2021-1046=1



Package List:

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

      kgraft-patch-4_12_14-122_63-default-2-2.2


References:

   https://www.suse.com/security/cve/CVE-2020-29368.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/1179664
   https://bugzilla.suse.com/1182717
   https://bugzilla.suse.com/1183120
   https://bugzilla.suse.com/1183491