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             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.3295
    Security update for the Linux Kernel (Live Patch 10 for SLE 15 SP4)
                                9 June 2023

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

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

Product:           Linux Kernel
Publisher:         SUSE
Operating System:  SUSE
Resolution:        Patch/Upgrade
CVE Names:         CVE-2023-28464 CVE-2023-23454 CVE-2023-2162
                   CVE-2023-1989 CVE-2023-1281 CVE-2023-0386

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2023/suse-su-20232459-1

Comment: CVSS (Max):  7.8 CVE-2023-28464 (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 10 for SLE 15 SP4)

Announcement ID:  SUSE-SU-2023:2459-1
     Rating:      important
                    o #1207188
                    o #1209683
                    o #1210499
   References:      o #1210500
                    o #1210662
                    o #1211111

                    o CVE-2023-0386
                    o CVE-2023-1281
                    o CVE-2023-1989
Cross-References:   o CVE-2023-2162
                    o CVE-2023-23454
                    o CVE-2023-28464

                    o CVE-2023-0386 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-0386 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-1281 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-1281 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-1989 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-1989 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
  CVSS scores:      o CVE-2023-2162 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-2162 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:N/A:N
                    o CVE-2023-23454 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N
                      /S:U/C:H/I:H/A:H
                    o CVE-2023-23454 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:N/I:N/A:H
                    o CVE-2023-28464 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N
                      /S:U/C:H/I:H/A:H
                    o CVE-2023-28464 ( 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 15 SP4
                    o SUSE Linux Enterprise Live Patching 15-SP4
    Affected        o SUSE Linux Enterprise Micro 5.3
    Products:       o SUSE Linux Enterprise Micro 5.4
                    o SUSE Linux Enterprise Real Time 15 SP4
                    o SUSE Linux Enterprise Server 15 SP4
                    o SUSE Linux Enterprise Server for SAP Applications 15 SP4

An update that solves six vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.14.21-150400_24_55 fixes several issues.

The following security issues were fixed:

  o CVE-2023-28464: Fixed user-after-free that could lead to privilege
    escalation in hci_conn_cleanup in net/uetooth/hci_conn.c (bsc#1211111).
  o CVE-2023-1989: Fixed a use after free in btsdio_remove (bsc#1210500).
  o CVE-2023-0386: Fixed privileges escalation for low-privileged users in the
    OverlayFS subsystem (bsc#1210499).
  o CVE-2023-1281: Fixed use after free that could lead to privilege escalation
    in tcindex (bsc#1209683).
  o CVE-2023-2162: Fixed an use-after-free flaw in iscsi_sw_tcp_session_create
    (bsc#1210662).
  o CVE-2023-23454: Fixed a type-confusion in the CBQ network scheduler (bsc#
    1207188).

Patch Instructions:

To install this SUSE Important 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 15-SP4
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-2459=1

Package List:

  o SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
       kernel-livepatch-5_14_21-150400_24_55-default-debuginfo-3-150400.2.3
       kernel-livepatch-SLE15-SP4_Update_10-debugsource-3-150400.2.3
       kernel-livepatch-5_14_21-150400_24_55-default-3-150400.2.3

References:

  o https://www.suse.com/security/cve/CVE-2023-0386.html
  o https://www.suse.com/security/cve/CVE-2023-1281.html
  o https://www.suse.com/security/cve/CVE-2023-1989.html
  o https://www.suse.com/security/cve/CVE-2023-2162.html
  o https://www.suse.com/security/cve/CVE-2023-23454.html
  o https://www.suse.com/security/cve/CVE-2023-28464.html
  o https://bugzilla.suse.com/show_bug.cgiid=1207188
  o https://bugzilla.suse.com/show_bug.cgiid=1209683
  o https://bugzilla.suse.com/show_bug.cgiid=1210499
  o https://bugzilla.suse.com/show_bug.cgiid=1210500
  o https://bugzilla.suse.com/show_bug.cgiid=1210662
  o https://bugzilla.suse.com/show_bug.cgiid=1211111

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