Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.6399 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP5) 2 November 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux Kernel (Live Patch 0 for SLE 15 SP5) Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2023-4623 CVE-2023-4147 CVE-2023-4004 CVE-2023-3390 Original Bulletin: https://www.suse.com/support/update/announcement/2023/suse-su-20234326-1 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 0 for SLE 15 SP5) Announcement ID: SUSE-SU-2023:4326-1 Rating: important o bsc#1212934 o bsc#1214812 References: o bsc#1215118 o bsc#1215440 o CVE-2023-3390 o CVE-2023-4004 Cross-References: o CVE-2023-4147 o CVE-2023-4623 o CVE-2023-3390 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2023-3390 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2023-4004 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2023-4004 ( NVD ): 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-2023-4147 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2023-4147 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2023-4623 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/ S:U/C:H/I:H/A:H o CVE-2023-4623 ( 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 15.5 o SUSE Linux Enterprise High Performance Computing 15 SP5 Affected o SUSE Linux Enterprise Live Patching 15-SP5 Products: o SUSE Linux Enterprise Micro 5.5 o SUSE Linux Enterprise Real Time 15 SP5 o SUSE Linux Enterprise Server 15 SP5 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 An update that solves four vulnerabilities can now be installed. Description: This update for the Linux Kernel 5.14.21-150500_53 fixes several issues. The following security issues were fixed: o CVE-2023-4147: Fixed use-after-free in nf_tables_newrule (bsc#1215118). 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). o CVE-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc #1214812). o CVE-2023-3390: Fixed an use-after-free vulnerability in the netfilter subsystem in net/netfilter/nf_tables_api.c that could allow a local attacker with user access to cause a privilege escalation issue (bsc# 1212934). 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 openSUSE Leap 15.5 zypper in -t patch SUSE-2023-4326=1 o SUSE Linux Enterprise Live Patching 15-SP5 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4326=1 Package List: o openSUSE Leap 15.5 (ppc64le s390x x86_64) kernel-livepatch-5_14_21-150500_53-default-debuginfo-5-150500.12.2 kernel-livepatch-SLE15-SP5_Update_0-debugsource-5-150500.12.2 kernel-livepatch-5_14_21-150500_53-default-5-150500.12.2 o SUSE Linux Enterprise Live Patching 15-SP5 (ppc64le s390x x86_64) kernel-livepatch-5_14_21-150500_53-default-debuginfo-5-150500.12.2 kernel-livepatch-SLE15-SP5_Update_0-debugsource-5-150500.12.2 kernel-livepatch-5_14_21-150500_53-default-5-150500.12.2 References: o https://www.suse.com/security/cve/CVE-2023-3390.html o https://www.suse.com/security/cve/CVE-2023-4004.html o https://www.suse.com/security/cve/CVE-2023-4147.html o https://www.suse.com/security/cve/CVE-2023-4623.html o https://bugzilla.suse.com/show_bug.cgiid=1212934 o https://bugzilla.suse.com/show_bug.cgiid=1214812 o https://bugzilla.suse.com/show_bug.cgiid=1215118 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/ iQIVAwUBZUMaeskNZI30y1K9AQjqrxAAp88hldis4FpAFMvMNJH09S037HFV33yz gWjIf/Fd+06+/DxlKHGohpP6nBGsjtVoMZjmyg9DGB4RyTzKjYsmzcA6DuEG+ASU WnY0b5eUQzSlzw+4eN6u5GAn1t3S7yAxGOL6vP48kTqO8wfbwQ3rU91aXsTzPc74 FFhmc6/n68a87/MuBS9eokQu5KxvaQer7rmFKcHuZ0wAUB84Y0sm3AdNUghN+T3B bf9bn1Agr1ZdabjoGqsexxR3Yu8ikDSR09y+Hu1JV5vwaRWJtq94k6z9CcuwDn4m MtgRxnvZnNppsOMqGIoSV+lzrCJxZuG7pMbRmQkz2WzwPZGYlF/s6s2UMW1gWP0F bdIVfWZzJDpGMxjtOT6bSmg/Qcmp6HvzpG4yQTAq93+hA8DsE3w2OHJghGGrIXOB 7p+3KgVDUizNeBVxHXzTAD58Y9+zQKEZS3E/Uh/66P7o1orUexpgZrtypgy8bY0K oBM5KQ4IthYStfnVEkk06VaxDmZ0pr9exEDPs9UDDH0ID61xKt5zlcmtz1/P3Ips xo8DeQWjpkU/5zRYQFvXXpFgOK1ZrJUL90AHCdqjbrVUC5xGYbpw/gUX64eXP1qJ JpyOvbBrodkdLQmvbBj1yGxthDnZRHPWvcTeHVLCRkeCJpvjiSWO+nVXwzfhC2uc MfBiUpyoNvU= =FyNZ -----END PGP SIGNATURE-----