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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.3662 kernel-rt security and bug fix update 28 June 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2023-28466 Original Bulletin: https://access.redhat.com/errata/RHSA-2023:3819 Comment: CVSS (Max): 7.0 CVE-2023-28466 (CVSS:3.1/AV:L/AC:H/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:H/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: Moderate: kernel-rt security and bug fix update Advisory ID: RHSA-2023:3819-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2023:3819 Issue date: 2023-06-27 CVE Names: CVE-2023-28466 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 NFV (v. 8) - x86_64 Red Hat Enterprise Linux RT (v. 8) - x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix(es): * kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference (CVE-2023-28466) 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. Bug Fix(es): * kernel-rt: update RT source tree to the RHEL-8.8.z1 source tree. (BZ#2210299) 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 The system must be rebooted for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 2179000 - CVE-2023-28466 kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference 6. Package List: Red Hat Enterprise Linux NFV (v. 8): Source: kernel-rt-4.18.0-477.15.1.rt7.278.el8_8.src.rpm x86_64: kernel-rt-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-core-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-core-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-devel-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-kvm-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-modules-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debuginfo-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-devel-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-kvm-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-modules-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-modules-extra-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm Red Hat Enterprise Linux RT (v. 8): Source: kernel-rt-4.18.0-477.15.1.rt7.278.el8_8.src.rpm x86_64: kernel-rt-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-core-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-core-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-devel-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-modules-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debuginfo-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-devel-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-modules-4.18.0-477.15.1.rt7.278.el8_8.x86_64.rpm kernel-rt-modules-extra-4.18.0-477.15.1.rt7.278.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-2023-28466 https://access.redhat.com/security/updates/classification/#moderate 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 iQIVAwUBZJsFg9zjgjWX9erEAQjVdQ/8CHfZ8HdtzynubF2kh4pwaN5zCrK3R+9/ WAgBNV/lkJWX2GqohdEJs/+w/fv7s9xTmZphDQVl9HgNeIRrU+vlpIzGYjFDwzGX IaNPSh81BPUnrQ8H3ajTxprje12b3H8eMpHtdAO3Rc+fiQrDRk5JqsdufjyBhcy3 kDQb6jdsp5sZMmSe4Pq16Qdr8pec1qQltCrgK9A8N1Xg+P9op99F462OJxBSF3qx 45U1jg9gFnyZJ8CW3XplO4hY7QWCrNB0s6WdBU+9Ad5LXKEiJaUGgn9BVnRFE9ml Tk4lu+CuJKjFs0nXmJNlXaNbp9388yQ75f5NJLvyL3HXXQPLkulYJdcPO+qHpicJ FPf6RGMiDxg4qXhTS+HpyYg6+A4Tum2fojUT2GLujTUrMhF9CCPFQG9GjU3EKzEo WvwoKmHvh6V2PD1+Z/3u0tYVDuAlKgx16lHRUDz+0stGxlLd3W7VQbzu86QfgK0Q /nSribPMFFcdhtJHNu2x9j+G7fXiA15068c/+xuRSZKHGq5bQ4+X1h3xmK6AaloS zM/8sBfrEahbAIupCY5VCY9mRWzaIplg7Y3FGgPJjX3fbLVvTbrZmrK4uPuDppOq Ln4CnQp8Lpj9IRlPj1CzEJV24tCBZPPihactTOKJnJR8PrmZErgw5WyDaPxCwwhl 9gSzcRUCEaQ= =nLlS - -----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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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBZJuDMskNZI30y1K9AQjmSQ/5ASyhINZBWr/OVoZLZgVa4rihqV8Wzukx SBRAN225BMpUQp8RqZSSwjTK+kRxTeb0K36XFPVcBVhlWs660SJ72Rg8mfyp9Z51 PK5fmQZxJoWEUcIduxP8DsLG8px+MvqzH/pRKE/IHQ5UeRBRwabY3E0c5sWQlnxY H6gmDkAGg9fmExtgurqaOLLVm7P+/b8DLMr9IxiTBfYxWJxHj+hmxaJNR3fJ/kXR gd8JwSinQLWcf0I+33brC6MXqN2qQOdCQl5XGc2U5NQBMFqcRKNivFCsuLM2PoX6 zWd+8R2Y9MlZmWC4K8e333dxvy8faBpNc5rKiBJzOcXs2+V5+/RBZIgnIyBd05S9 rCDv2hRWXkaD3s4ZsqXUKFA9/YBdSSgwg4NS2CnVE6HiKiFNMv9pjTvxo4h4Yrq7 tefxkktltrMIjGo46L/96OhKBHpraabztootgC343gAe+7A8W7OgBErfkg6cO7ic QXB+lCQNHKeY9n0scVm3aXGkSPI7NhfyFckg+mANZDUGVGbhoI3440XiHud3/hJf NbRjVJtOJYu3+lsIPJdTB7O6XahdZy/597JJqkhwzPS5iW84ITy6PRAOW/Os7K+N rD0eNV2x+QBX4JmIaZJM4ISpnoqWpQT3NeLMB+KsojufG+wmJwiESs+BWZQiIFXc rY4DakXnULE= =r6FV -----END PGP SIGNATURE-----