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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.6397 Security update for the Linux Kernel (Live Patch 18 for SLE 15 SP4) 2 November 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel (Live Patch 18 for SLE 15 SP4) 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-20234328-1 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 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for the Linux Kernel (Live Patch 18 for SLE 15 SP4) Announcement ID: SUSE-SU-2023:4328-1 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 openSUSE Leap 15.4 o openSUSE Leap 15.5 o SUSE Linux Enterprise High Performance Computing 15 SP4 o SUSE Linux Enterprise High Performance Computing 15 SP5 o SUSE Linux Enterprise Live Patching 15-SP4 o SUSE Linux Enterprise Live Patching 15-SP5 Affected o SUSE Linux Enterprise Micro 5.3 Products: o SUSE Linux Enterprise Micro 5.4 o SUSE Linux Enterprise Micro 5.5 o SUSE Linux Enterprise Real Time 15 SP4 o SUSE Linux Enterprise Real Time 15 SP5 o SUSE Linux Enterprise Server 15 SP4 o SUSE Linux Enterprise Server 15 SP5 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 An update that solves one vulnerability can now be installed. Description: This update for the Linux Kernel 5.14.21-150400_24_88 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 15-SP4 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-4327=1 o openSUSE Leap 15.5 zypper in -t patch SUSE-2023-4328=1 o SUSE Linux Enterprise Live Patching 15-SP5 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4328=1 o openSUSE Leap 15.4 zypper in -t patch SUSE-2023-4327=1 Package List: o SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64) kernel-livepatch-SLE15-SP4_Update_18-debugsource-2-150400.2.1 kernel-livepatch-5_14_21-150400_24_88-default-2-150400.2.1 kernel-livepatch-5_14_21-150400_24_88-default-debuginfo-2-150400.2.1 o openSUSE Leap 15.5 (ppc64le s390x x86_64) kernel-livepatch-5_14_21-150500_55_28-default-2-150500.2.1 kernel-livepatch-SLE15-SP5_Update_5-debugsource-2-150500.2.1 kernel-livepatch-5_14_21-150500_55_28-default-debuginfo-2-150500.2.1 o SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64) kernel-livepatch-5_14_21-150500_55_28-default-2-150500.2.1 o SUSE Linux Enterprise Live Patching 15-SP5 (x86_64) kernel-livepatch-SLE15-SP5_Update_5-debugsource-2-150500.2.1 kernel-livepatch-5_14_21-150500_55_28-default-debuginfo-2-150500.2.1 o openSUSE Leap 15.4 (ppc64le s390x x86_64) kernel-livepatch-SLE15-SP4_Update_18-debugsource-2-150400.2.1 kernel-livepatch-5_14_21-150400_24_88-default-2-150400.2.1 kernel-livepatch-5_14_21-150400_24_88-default-debuginfo-2-150400.2.1 References: o https://www.suse.com/security/cve/CVE-2023-4623.html o https://bugzilla.suse.com/show_bug.cgiid=1215440 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBZUMaXskNZI30y1K9AQjNdw/9EZYjqn6q4nqnPANJ0lV5qiiXFLLdIehC 7WA6FJP13yguGsqLEAG16jYdsYEHv4TBUvVOvlDl+q7YuA/XJDMPeNBIhDe969EE Y1s6pez3rQDzKs4aMbPgF2b8ylW1BG2zGT8FG4QlN8VY/ABVHv5hxSQntGlloPRS 5Y5Cc/zYLQEHR0Czz3Cxp46mvM5nwJ4EALAd/jj57jdzAlO/q6036R2wfr/h7m1W zWT59E4+tHnmReAjGtrVQMoJWGaO18CJTMopkyRKNJjZPqv59+uE1tkWzM3thvFE CaiY6L89Q9KGrWTYtChe1KMlDGfzyBarFqu7D3viWbwFWcy2sQFAN15qYG6Bz6eQ bIqvY14DiKi8iNPG3rhrg+4Ec9xL9ayirIxtkgbkMdMCJ0Fvp87wVtWR8yjMR7v1 x5cq/nEvU9bZbsXULNQr1Uqwmxjftq6BLc6M/I0WqqwzRfIDpByojryWT0M9Edfx lDpEkmJdfK4fKV39UdOuQO0D+xCsVKg6r/u1WAeXfgIWu5VOhXhB26aBP5aRNuC5 ltGaPEgDHzycoRTgANjGO/a5i/dRWOFg0ViDulws3PhUEGMQs8Vf1iJyZmNqtbvN HaNNMgxbLalGYajRK+ULcPwrI5T0PwInkqhmw8gW7k2K6JwzgqdHcJiDgLvjzT0e 2mhKFuIENgU= =Vxya -----END PGP SIGNATURE-----