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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.0525
    Security update for the Linux Kernel (Live Patch 9 for SLE 15 SP2)
                             12 February 2021

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

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

Product:           Linux Kernel
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Increased Privileges     -- Existing Account
                   Denial of Service        -- Existing Account
                   Access Confidential Data -- Existing Account
                   Unauthorised Access      -- Existing Account
                   Reduced Security         -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-29569 CVE-2020-29373 CVE-2020-29368

Reference:         ESB-2021.0456
                   ESB-2021.0166
                   ESB-2020.4417

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2021/suse-su-20210359-1

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SUSE Security Update: Security update for the Linux Kernel (Live 

______________________________________________________________________________

Announcement ID:   SUSE-SU-2021:0359-1
Rating:            important
References:        #1179664 #1179779 #1180008
Cross-References:  CVE-2020-29368 CVE-2020-29373 CVE-2020-29569
Affected Products:
                   SUSE Linux Enterprise Module for Live Patching 15-SP2
______________________________________________________________________________

Patch 9 for
SLE 15 SP2)

An update that fixes three vulnerabilities is now available.

Description:

This update for the Linux Kernel 5.3.18-24_46 fixes several issues.
The following security issues were fixed:

  o CVE-2020-29373: Fixed an issue where kernel unsafely handles the root
    directory during path lookups, and thus a process inside a mount namespace
    can escape to unintended filesystem locations (bsc#1179779).
  o CVE-2020-29569: Fixed a use after free due to a logic error (bsc#1180008).
  o CVE-2020-29368: Fixed an issue in copy-on-write implementation which could
    grant unintended write access because of 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:

  o SUSE Linux Enterprise Module for Live Patching 15-SP2:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2021-359=1

Package List:

  o SUSE Linux Enterprise Module for Live Patching 15-SP2 (ppc64le s390x
    x86_64):
       kernel-livepatch-5_3_18-24_46-default-2-2.1
       kernel-livepatch-5_3_18-24_46-default-debuginfo-2-2.1
       kernel-livepatch-SLE15-SP2_Update_9-debugsource-2-2.1


References:

  o https://www.suse.com/security/cve/CVE-2020-29368.html
  o https://www.suse.com/security/cve/CVE-2020-29373.html
  o https://www.suse.com/security/cve/CVE-2020-29569.html
  o https://bugzilla.suse.com/1179664
  o https://bugzilla.suse.com/1179779
  o https://bugzilla.suse.com/1180008

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===========================================================================
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The University of Queensland
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