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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.3169 kpatch-patch security update 5 June 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kpatch-patch Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2023-32233 Original Bulletin: https://access.redhat.com/errata/RHSA-2023:3351 Comment: CVSS (Max): 7.8 CVE-2023-32233 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) CVSS Source: Red Hat 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-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2023:3351-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2023:3351 Issue date: 2023-05-30 CVE Names: CVE-2023-32233 ===================================================================== 1. Summary: An update for kpatch-patch is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux BaseOS (v. 8) - ppc64le, x86_64 3. Description: This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Security Fix(es): * kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation (CVE-2023-32233) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 2196105 - CVE-2023-32233 kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: kpatch-patch-4_18_0-477_10_1-1-1.el8_8.src.rpm ppc64le: kpatch-patch-4_18_0-477_10_1-1-1.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_10_1-debuginfo-1-1.el8_8.ppc64le.rpm kpatch-patch-4_18_0-477_10_1-debugsource-1-1.el8_8.ppc64le.rpm x86_64: kpatch-patch-4_18_0-477_10_1-1-1.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_10_1-debuginfo-1-1.el8_8.x86_64.rpm kpatch-patch-4_18_0-477_10_1-debugsource-1-1.el8_8.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2023-32233 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2023 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBZHsDqdzjgjWX9erEAQjGGg/+IsR5ROGrGPCdQErhjDV0TKf9VOlh2F54 DaRjsAdJjscBC2yWTQX6mnn6DbpjYGAtvlLJE9C8+gEgVZsjY6XJ5GbczOEfx6UX q4D7aba26JjFjBZHV9Tqw3Yj18OC2UjKfCez5Ec2+C/lowGRpalegbHRkl3TAeMt pq2P8RA2sTnxczVB2e3UuBDosNUdBay2KYa+Qhr0j3RaFjsghF+k4OysAmTVLiBy 5fteDmqVk6hkHIM/Xir6pXIo34bXhdV2c/AN/bFGt9IJZd25niz9tRZmy8huQM4W zKaAe7OvV9MFZFVGFxArfqEPHTcR9KRca4nIfJAKKMMCDj2vktP7CclDpadnYBpG dDiuZFgwzYNIOXOyFsZEqy3vB0IQiHK0ogTBJKCEVdRZAWdyr28fLZGGAIyiRFe1 eM64X6SmTz0GFDSiPawlx8wEnl5HHW8pc+//lDDP7zcRnmmv9dMckFIvrFZmboSM 0XwJ1g3p7I0aKxyp2pFPxMj+RyK5WohkSQwW4il5mlmR3ZPx3N8kc3w0mV5yrPDp cZ2qK32YqatLlCdKIlrrjzFLy3MKeF7EHlY3yUUl/cZTdPKsGY0dEivAu6Lr6xfF C1qQY5/AuCRPWvGOrQEdJHTfqQDW2/dwmb2aIXT5cwJgUK4UVxK27W0+AudTRYfT C1TcJRiw5w4= =tC+V - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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/ iQIVAwUBZH1EmMkNZI30y1K9AQgCTBAAhc5l4KnTCMnmfYKsuW5BWpV7hkvLN3E2 KP7kZKMIP4DFckGuMNljez/youaB3aAgTxkw7B3yRTIbyoOfDcAK+rvSHADSvtic wd93lUg/D+X+g5xYwlQjVXbXero1Al1v1Ukr7/uo0thr0B5lUOgvXWH/2H4apSUW nzi+4Y2BfTABMALUQbIVCijUYwfmQ10gU7SZrK3QfJfA/PU4dDm+yYCAJDieXMe3 s2NzwV6TEGyFMJ+djndkjPIMfHmZIv11PS9ymsfVkSPjcrhiuv+3zM6mKwn8bS7I aITi9K2QQkU2vMSDGP7lfRhLxreq6lItsGCj+uKJwqPWhtCfxLYEU+yRvXCA3fDx UuCzjqyEa2KzXBORU2aLbqH/cQ9pPKkb+hNY3xY+73eSJhvRTLH9CSRG/zClcl/s Ab1hizneEHVqMCCwDdtuOC4wjAwY3oTpZM7wkycwxdn/OxvNHm7qHA3EiENwaofH gPEXvbPbs80tsLNIKXTq6sKShrKCzGnGyvJrmfNdIbRDCqRM1Ec0oqyjVVjtAO7H VZyCNd6oEZOupmhZnWuJMwjE88zrw3Bh4+gOvD9nB5m2yUxsfu5M9cW7Z61JurlU cF4GhZUbc3yMAFSbawKxLGP4gNJccknZjZy6VQfIqNUhhwWTggOsTX0qW+k5FK1l wrrAve4suQU= =wjYj -----END PGP SIGNATURE-----