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=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2024.2528 kpatch-patch security update 26 April 2024 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kpatch-patch Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2023-4623 CVE-2023-4622 Original Bulletin: https://access.redhat.com/errata/RHSA-2024:1960 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: 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-------------------- ===================================================================== Red Hat Security Advisory Synopsis: Important: kpatch-patch security update Advisory ID: RHSA-2024:1960 Product: Red Hat Enterprise Linux Server (v. 7) Advisory URL: https://access.redhat.com/errata/RHSA-2024:1960 Issue date: 2024-04-23 CVE Names: CVE-2023-4622 CVE-2023-4623 ===================================================================== 1. Summary: An update for kpatch-patch is now available for Red Hat Enterprise Linux 7. 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 Server (v. 7) - x86_64, ppc64le 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: use after free in unix_stream_sendpage (CVE-2023-4622) * kernel: net/sched: sch_hfsc UAF (CVE-2023-4623) 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/): 2237760 - CVE-2023-4622 - kernel: use after free in unix_stream_sendpage 2237757 - CVE-2023-4623 - kernel: net/sched: sch_hfsc UAF 6. Package List: Red Hat Enterprise Linux Server (v. 7) ppc64le: kpatch-patch-3_10_0-1160_102_1-0:1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_102_1-debuginfo-0:1-4.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_105_1-0:1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_105_1-debuginfo-0:1-3.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_108_1-0:1-2.el7.ppc64le.rpm kpatch-patch-3_10_0-1160_108_1-debuginfo-0:1-2.el7.ppc64le.rpm Source: kpatch-patch-3_10_0-1160_102_1-0:1-4.el7.src.rpm kpatch-patch-3_10_0-1160_105_1-0:1-3.el7.src.rpm kpatch-patch-3_10_0-1160_108_1-0:1-2.el7.src.rpm x86_64: kpatch-patch-3_10_0-1160_102_1-0:1-4.el7.x86_64.rpm kpatch-patch-3_10_0-1160_102_1-debuginfo-0:1-4.el7.x86_64.rpm kpatch-patch-3_10_0-1160_105_1-0:1-3.el7.x86_64.rpm kpatch-patch-3_10_0-1160_105_1-debuginfo-0:1-3.el7.x86_64.rpm kpatch-patch-3_10_0-1160_108_1-0:1-2.el7.x86_64.rpm kpatch-patch-3_10_0-1160_108_1-debuginfo-0:1-2.el7.x86_64.rpm 7. References: https://access.redhat.com/security/cve/CVE-2023-4622 https://access.redhat.com/security/cve/CVE-2023-4623 https://access.redhat.com/security/updates/classification/#important - --------------------------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. 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