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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0169 Important: microcode_ctl security update reverts microcode_ctl fix for Meltdown 17 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: microcode_ctl Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux WS/Desktop 6 Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-5715 Reference: ASB-2018.0009 ESB-2018.0164 ESB-2018.0163 ESB-2018.0137 ESB-2018.0136 ESB-2018.0135 ASB-2018.0002.4 Original Bulletin: https://access.redhat.com/errata/RHSA-2018:0093 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: microcode_ctl security update Advisory ID: RHSA-2018:0093-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0093 Issue date: 2018-01-16 ===================================================================== 1. Summary: An update for microcode_ctl is now available for Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 6.2 Advanced Update Support, Red Hat Enterprise Linux 6.4 Advanced Update Support, Red Hat Enterprise Linux 6.5 Advanced Update Support, Red Hat Enterprise Linux 6.6 Advanced Update Support, Red Hat Enterprise Linux 6.6 Telco Extended Update Support, Red Hat Enterprise Linux 6.7 Extended Update Support, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions, and Red Hat Enterprise Linux 7.3 Extended Update Support. 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 Client (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode EUS (v. 7.3) - x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, x86_64 Red Hat Enterprise Linux Server (v. 7) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.2) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.4) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server AUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server AUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.2) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, x86_64 Red Hat Enterprise Linux Server EUS (v. 7.3) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: The microcode_ctl packages provide microcode updates for Intel and AMD processors. This update supersedes microcode provided by Red Hat with the CVE-2017-5715 (Spectre) CPU branch injection vulnerability mitigation. (Historically, Red Hat has provided updated microcode, developed by our microprocessor partners, as a customer convenience.) Further testing has uncovered problems with the microcode provided along with the Spectre mitigation that could lead to system instabilities. As a result, Red Hat is providing an microcode update that reverts to the last known good microcode version dated before 03 January 2018. Red Hat strongly recommends that customers contact their hardware provider for the latest microcode updates. IMPORTANT: Customers using Intel Skylake-, Broadwell-, and Haswell-based platforms must obtain and install updated microcode from their hardware vendor immediately. The "Spectre" mitigation requires both an updated kernel from Red Hat and updated microcode from your hardware vendor. 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 Note: a system reboot is necessary for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: microcode_ctl-1.17-25.4.el6_9.src.rpm i386: microcode_ctl-1.17-25.4.el6_9.i686.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.i686.rpm x86_64: microcode_ctl-1.17-25.4.el6_9.x86_64.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.x86_64.rpm Red Hat Enterprise Linux HPC Node EUS (v. 6.7): Source: microcode_ctl-1.17-20.2.el6_7.src.rpm x86_64: microcode_ctl-1.17-20.2.el6_7.x86_64.rpm microcode_ctl-debuginfo-1.17-20.2.el6_7.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: microcode_ctl-1.17-25.4.el6_9.src.rpm x86_64: microcode_ctl-1.17-25.4.el6_9.x86_64.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.2): Source: microcode_ctl-1.17-9.2.el6_2.src.rpm x86_64: microcode_ctl-1.17-9.2.el6_2.x86_64.rpm microcode_ctl-debuginfo-1.17-9.2.el6_2.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.4): Source: microcode_ctl-1.17-16.2.el6_4.src.rpm x86_64: microcode_ctl-1.17-16.2.el6_4.x86_64.rpm microcode_ctl-debuginfo-1.17-16.2.el6_4.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.5): Source: microcode_ctl-1.17-17.el6_5.3.src.rpm x86_64: microcode_ctl-1.17-17.el6_5.3.x86_64.rpm microcode_ctl-debuginfo-1.17-17.el6_5.3.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 6.6): Source: microcode_ctl-1.17-19.2.el6_6.src.rpm x86_64: microcode_ctl-1.17-19.2.el6_6.x86_64.rpm microcode_ctl-debuginfo-1.17-19.2.el6_6.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.6): Source: microcode_ctl-1.17-19.2.el6_6.src.rpm x86_64: microcode_ctl-1.17-19.2.el6_6.x86_64.rpm microcode_ctl-debuginfo-1.17-19.2.el6_6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.7): Source: microcode_ctl-1.17-20.2.el6_7.src.rpm i386: microcode_ctl-1.17-20.2.el6_7.i686.rpm microcode_ctl-debuginfo-1.17-20.2.el6_7.i686.rpm x86_64: microcode_ctl-1.17-20.2.el6_7.x86_64.rpm microcode_ctl-debuginfo-1.17-20.2.el6_7.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: microcode_ctl-1.17-25.4.el6_9.src.rpm i386: microcode_ctl-1.17-25.4.el6_9.i686.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.i686.rpm x86_64: microcode_ctl-1.17-25.4.el6_9.x86_64.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: microcode_ctl-1.17-25.4.el6_9.src.rpm i386: microcode_ctl-1.17-25.4.el6_9.i686.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.i686.rpm x86_64: microcode_ctl-1.17-25.4.el6_9.x86_64.rpm microcode_ctl-debuginfo-1.17-25.4.el6_9.x86_64.rpm Red Hat Enterprise Linux Client (v. 7): Source: microcode_ctl-2.1-22.5.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.5.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.5.el7_4.x86_64.rpm Red Hat Enterprise Linux ComputeNode EUS (v. 7.3): Source: microcode_ctl-2.1-16.5.el7_3.src.rpm x86_64: microcode_ctl-2.1-16.5.el7_3.x86_64.rpm microcode_ctl-debuginfo-2.1-16.5.el7_3.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: microcode_ctl-2.1-22.5.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.5.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.5.el7_4.x86_64.rpm Red Hat Enterprise Linux Server AUS (v. 7.2): Source: microcode_ctl-2.1-12.el7_2.3.src.rpm x86_64: microcode_ctl-2.1-12.el7_2.3.x86_64.rpm microcode_ctl-debuginfo-2.1-12.el7_2.3.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.2): Source: microcode_ctl-2.1-12.el7_2.3.src.rpm x86_64: microcode_ctl-2.1-12.el7_2.3.x86_64.rpm microcode_ctl-debuginfo-2.1-12.el7_2.3.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.2): Source: microcode_ctl-2.1-12.el7_2.3.src.rpm x86_64: microcode_ctl-2.1-12.el7_2.3.x86_64.rpm microcode_ctl-debuginfo-2.1-12.el7_2.3.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.3): Source: microcode_ctl-2.1-16.5.el7_3.src.rpm x86_64: microcode_ctl-2.1-16.5.el7_3.x86_64.rpm microcode_ctl-debuginfo-2.1-16.5.el7_3.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: microcode_ctl-2.1-22.5.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.5.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.5.el7_4.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: microcode_ctl-2.1-22.5.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.5.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.5.el7_4.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5715 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaXnutXlSAg2UNWIIRAnX9AJ42OoAOheyNnQ94fmhrdR3ct71OtQCeOXWl lxJtqgKZmAN1XJ/l4LHYQXk= =n0U/ - -----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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