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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.1962 kernel-rt security and bug fix update 5 April 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2023-0266 CVE-2022-3564 Original Bulletin: https://access.redhat.com/errata/RHSA-2023:1560 Comment: CVSS (Max): 7.8 CVE-2023-0266 (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: kernel-rt security and bug fix update Advisory ID: RHSA-2023:1560-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2023:1560 Issue date: 2023-04-04 CVE Names: CVE-2022-3564 CVE-2023-0266 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Telecommunications Update Service. 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 Real Time TUS (v. 8.2) - x86_64 Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2) - 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: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c (CVE-2022-3564) * ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF (CVE-2023-0266) 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 latest RHEL-8.2.z (BZ#2174904) 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/): 2150999 - CVE-2022-3564 kernel: use-after-free caused by l2cap_reassemble_sdu() in net/bluetooth/l2cap_core.c 2163379 - CVE-2023-0266 ALSA: pcm: Move rwsem lock inside snd_ctl_elem_read to prevent UAF 6. Package List: Red Hat Enterprise Linux Real Time for NFV TUS (v. 8.2): Source: kernel-rt-4.18.0-193.105.1.rt13.156.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-kvm-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-kvm-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm Red Hat Enterprise Linux Real Time TUS (v. 8.2): Source: kernel-rt-4.18.0-193.105.1.rt13.156.el8_2.src.rpm x86_64: kernel-rt-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-core-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-core-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-debuginfo-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-devel-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-modules-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debug-modules-extra-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debuginfo-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-debuginfo-common-x86_64-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-devel-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-modules-4.18.0-193.105.1.rt13.156.el8_2.x86_64.rpm kernel-rt-modules-extra-4.18.0-193.105.1.rt13.156.el8_2.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-2022-3564 https://access.redhat.com/security/cve/CVE-2023-0266 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 iQIVAwUBZCvqntzjgjWX9erEAQj/1A//fo2oh4J2I4PmVQXQ0U7UTbGuIsJDPA3K SlHDwEde8dH1TPVHl/8KJweod3yQs20QEmYodUi7H4cDpaxrs1YJCFxAStYERcfO +f037clL0ueX3JhFI7TK+X0tkFZhWgdlvNzCyf/WKEkUll3QjxoIbo4kQcypvXXm cvhQpWzvzU9CjBM/G8Kr2qFx1bU5EK+pTrFSL8OcRiuftz7WIWJfSYt+sx5hzXms o6M3VuLAG9l34anMOrudS3fu174qBIYxmbdIbCzUdLW+A5157nB3asvkewJ1pOEB GTILaMBYy824xcVrfTABt9PRYBTRVACXFu5RcgIkFlypOeaa95Uaw3qTFC8CiGZ2 2/4NAKaaHmRTyGy4dcaFZfX8zjtBH3k530O91x1JNIjzlzyGe9Q9k0BAj4qO0Gzu NebFHLYLW3BMXEBvZbUUa7s5OCHHvQQXv6PutqgZa4emC3obMVvcI54+s/rMCq7C QcV1VUrUUBMgvOFcNChsr9Myxp7B8oQ68KXt+m4eCZyINyxHPSbQCGVl+XT0XFva y1On/ACZ8pI6PY7igOM99cp6OQ7B9obmwhA3BkaX/zP49W1DpnsCAI093Mw5RfoX l2Z/KIfPBhG6NuoHNOjtr4Kj1Ut0YQPdU0UWruKGXbedCnswyHSP5mg3yKnYh6Co z/qSskkQers= =L3cV - -----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/ iQIVAwUBZCzK8ckNZI30y1K9AQgPKhAAhtOPrHcjJ920AwjL7B8cmk2CEXf4LVP6 MGtqR9v7LvLvWy43J2HAOXsYkjS8WKKzkN6+xHsCaJn/kEPlAurjAK7yY+tOuYEl qW8080HhrZKMsaeCcLcfKCwdZRTRUNWuM1StEhyff8U1uLOy4AT4q4GClgo7RXdt zTDZsSerDaYxbgKwg2qWKEianAkoayAyuzRI1dkFZWEhqbj084eT+RyTPbzcp262 54Lv7KzTgrhWPPUHa/KZv4Ec07YIWw+vNVCpNQepMniL/T+DGoQbdSESAU/ElzlE eMzzxQdc4kn1HZxqKZAXecG0+3aqQYTLJtReNnc0kitQdEMtyLoKPvpMzPvtgIZ/ MvuPxwyKnU2aJTvcxiPWlGU69bwaO/NqdFP4ij7Hzd4iptDxuB0eHbVMxl9vLyav RE24Cx3DGHJEPuqHFW6vlWM486Rc/Uvyo+SHQUdgn7YSeCF1ptT70+BCzJYbJuI0 1JmPsJ8YVQEjwsygUaOgufzTPNhtkDMZNsBkZgiQZj6BgJXImlqTS0WKW7TmdmSR RXl21ZNYhVQW50ngYVbLedTI6U95p5XNreDIb4n6L9PL6jJDxjv+wWY4GVfWhYaD dd3Q9Sh/vyoErqM4KPVS9Ofi3Ez5LY9jW/N4y9oG/equHLUxQA1lyyi0Rlsnz1Va 7uki2901F5Q= =DNAW -----END PGP SIGNATURE-----