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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2023.3296
    Security update for the Linux Kernel (Live Patch 27 for SLE 15 SP2)
                                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-2023-1872 CVE-2023-1281
                   CVE-2023-0461  

Original Bulletin: 
   https://www.suse.com/support/update/announcement/2023/suse-su-20232448-1

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

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

Security update for the Linux Kernel (Live Patch 27 for SLE 15 SP2)

Announcement ID:  SUSE-SU-2023:2448-1
     Rating:      important
                    o #1207188
                    o #1208911
                    o #1209683
   References:      o #1210417
                    o #1210500
                    o #1210662
                    o #1211111

                    o CVE-2023-0461
                    o CVE-2023-1281
                    o CVE-2023-1872
Cross-References:   o CVE-2023-1989
                    o CVE-2023-2162
                    o CVE-2023-23454
                    o CVE-2023-28464

                    o CVE-2023-0461 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-0461 ( 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-2023-1872 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/
                      S:U/C:H/I:H/A:H
                    o CVE-2023-1872 ( 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
  CVSS scores:      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
                    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 SP2
    Affected        o SUSE Linux Enterprise Live Patching 15-SP2
    Products:       o SUSE Linux Enterprise Server 15 SP2
                    o SUSE Linux Enterprise Server for SAP Applications 15 SP2

An update that solves seven vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 5.3.18-150200_24_115 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-2023-1872: Fixed a use after free vulnerability in the io_uring
    subsystem, which could lead to local privilege escalation (bsc#1210417).
  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-2023-0461: Fixed use-after-free in icsk_ulp_data (bsc#1208911).
  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-SP2
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP2-2023-2449=1
    SUSE-SLE-Module-Live-Patching-15-SP2-2023-2448=1

Package List:

  o SUSE Linux Enterprise Live Patching 15-SP2 (ppc64le s390x x86_64)
       kernel-livepatch-5_3_18-150200_24_139-default-debuginfo-5-150200.2.3
       kernel-livepatch-SLE15-SP2_Update_27-debugsource-14-150200.2.3
       kernel-livepatch-5_3_18-150200_24_139-default-5-150200.2.3
       kernel-livepatch-SLE15-SP2_Update_32-debugsource-5-150200.2.3
       kernel-livepatch-5_3_18-150200_24_115-default-14-150200.2.3
       kernel-livepatch-5_3_18-150200_24_115-default-debuginfo-14-150200.2.3

References:

  o https://www.suse.com/security/cve/CVE-2023-0461.html
  o https://www.suse.com/security/cve/CVE-2023-1281.html
  o https://www.suse.com/security/cve/CVE-2023-1872.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=1208911
  o https://bugzilla.suse.com/show_bug.cgiid=1209683
  o https://bugzilla.suse.com/show_bug.cgiid=1210417
  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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===========================================================================
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