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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.2583
                   Security updates for the Linux Kernel
                               30 July 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Root Compromise   -- Existing Account
                   Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-33909 CVE-2021-22555 CVE-2020-36385

Reference:         ESB-2021.2562
                   ESB-2021.2555
                   ESB-2021.2461
                   ESB-2021.2453

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2021/suse-su-20212560-1
   https://www.suse.com/support/update/announcement/2021/suse-su-20212559-1

Comment: This bulletin contains two (2) SUSE security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

SUSE Security Update: Security update for the Linux Kernel (Live Patch 22 for
SLE 15 SP1)

______________________________________________________________________________

Announcement ID:   SUSE-SU-2021:2560-1
Rating:            important
References:        #1187052 #1188117 #1188257
Cross-References:  CVE-2020-36385 CVE-2021-22555 CVE-2021-33909
Affected Products:
                   SUSE Linux Enterprise Module for Live Patching 15-SP1
______________________________________________________________________________

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-197_83 fixes several issues.
The following security issues were fixed:

  o CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that
    allows to andobtain full root privileges. (bsc#1188062)
  o CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/
    x_tables.c that could allow local provilege escalation. (bsc#1188116)
  o CVE-2020-36385: Fixed a use-after-free vulnerability reached via the
    ctx_list in some ucma_migrate_id situations where ucma_close is called.
    (bnc#1187050)

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:

  o SUSE Linux Enterprise Module for Live Patching 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2021-2560=1
    SUSE-SLE-Module-Live-Patching-15-SP1-2021-2561=1

Package List:

  o SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
       kernel-livepatch-4_12_14-197_56-default-12-2.2
       kernel-livepatch-4_12_14-197_83-default-8-2.2


References:

  o https://www.suse.com/security/cve/CVE-2020-36385.html
  o https://www.suse.com/security/cve/CVE-2021-22555.html
  o https://www.suse.com/security/cve/CVE-2021-33909.html
  o https://bugzilla.suse.com/1187052
  o https://bugzilla.suse.com/1188117
  o https://bugzilla.suse.com/1188257


- --------------------------------------------------------------------------------


SUSE Security Update: Security update for the Linux Kernel (Live Patch 2 for 
SLE 15 SP3)

______________________________________________________________________________

Announcement ID:   SUSE-SU-2021:2559-1
Rating:            important
References:        #1188117 #1188257
Cross-References:  CVE-2021-22555 CVE-2021-33909
Affected Products:
                   SUSE Linux Enterprise Module for Live Patching 15-SP3
______________________________________________________________________________

Patch 2 for
SLE 15 SP3)

An update that fixes two vulnerabilities is now available.

Description:

This update for the Linux Kernel 5.3.18-59_10 fixes several issues.
The following security issues were fixed:

  o CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that
    allows to andobtain full root privileges. (bsc#1188062)
  o CVE-2021-22555: Fixed an heap out-of-bounds write in net/netfilter/
    x_tables.c that could allow local provilege escalation. (bsc#1188116)

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:

  o SUSE Linux Enterprise Module for Live Patching 15-SP3:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2021-2559=1

Package List:

  o SUSE Linux Enterprise Module for Live Patching 15-SP3 (ppc64le s390x
    x86_64):
       kernel-livepatch-5_3_18-59_10-default-2-2.1
       kernel-livepatch-5_3_18-59_10-default-debuginfo-2-2.1
       kernel-livepatch-SLE15-SP3_Update_2-debugsource-2-2.1


References:

  o https://www.suse.com/security/cve/CVE-2021-22555.html
  o https://www.suse.com/security/cve/CVE-2021-33909.html
  o https://bugzilla.suse.com/1188117
  o https://bugzilla.suse.com/1188257

- --------------------------END INCLUDED TEXT--------------------

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