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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.6396
    Security update for the Linux Kernel (Live Patch 40 for SLE 12 SP5)
                              2 November 2023

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

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

Product:           Linux Kernel (Live Patch 40 for SLE 12 SP5)
Publisher:         SUSE
Operating System:  SUSE
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-4623  

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2023/suse-su-20234313-1

Comment: CVSS (Max):  7.8 CVE-2023-4623 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
         CVSS Source: SUSE
         Calculator:  https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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Security update for the Linux Kernel (Live Patch 40 for SLE 12 SP5)

Announcement ID:  SUSE-SU-2023:4313-1
     Rating:      important
   References:      o bsc#1215440

Cross-References:   o CVE-2023-4623

                    o CVE-2023-4623 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
  CVSS scores:      o CVE-2023-4623 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H

                    o SUSE Linux Enterprise High Performance Computing 12 SP5
    Affected        o SUSE Linux Enterprise Live Patching 12-SP5
    Products:       o SUSE Linux Enterprise Server 12 SP5
                    o SUSE Linux Enterprise Server for SAP Applications 12 SP5

An update that solves one vulnerability can now be installed.

Description:

This update for the Linux Kernel 4.12.14-122_150 fixes one issue.

The following security issue was fixed:

  o CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler
    which could be exploited to achieve local privilege escalation (bsc#
    1215440).

Patch Instructions:

To install this SUSE 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 Live Patching 12-SP5
    zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2023-4313=1
    SUSE-SLE-Live-Patching-12-SP5-2023-4307=1
    SUSE-SLE-Live-Patching-12-SP5-2023-4312=1

Package List:

  o SUSE Linux Enterprise Live Patching 12-SP5 (ppc64le s390x x86_64)
       kgraft-patch-4_12_14-122_150-default-9-2.3
       kgraft-patch-4_12_14-122_165-default-4-2.2
       kgraft-patch-4_12_14-122_153-default-7-2.2

References:

  o https://www.suse.com/security/cve/CVE-2023-4623.html
  o https://bugzilla.suse.com/show_bug.cgiid=1215440

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