-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2018:1638-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1638 Issue date: 2018-05-29 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.7 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 HPC Node EUS (v. 6.7) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 6.7) - i386, ppc64, s390x, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639) Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software side of the mitigation for this hardware issue. To be fully functional, up-to-date CPU microcode applied on the system is required. Please refer to References section for further information about this issue, CPU microcode requirements and the potential performance impact. In this update mitigations for x86 (both 32 and 64 bit) architecture are provided. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue. 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/): 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.7): Source: kernel-2.6.32-573.55.4.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-573.55.4.el6.noarch.rpm kernel-doc-2.6.32-573.55.4.el6.noarch.rpm kernel-firmware-2.6.32-573.55.4.el6.noarch.rpm x86_64: kernel-2.6.32-573.55.4.el6.x86_64.rpm kernel-debug-2.6.32-573.55.4.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debug-devel-2.6.32-573.55.4.el6.i686.rpm kernel-debug-devel-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-573.55.4.el6.x86_64.rpm kernel-devel-2.6.32-573.55.4.el6.x86_64.rpm kernel-headers-2.6.32-573.55.4.el6.x86_64.rpm perf-2.6.32-573.55.4.el6.x86_64.rpm perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional EUS (v. 6.7): x86_64: kernel-debug-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-573.55.4.el6.x86_64.rpm perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm python-perf-2.6.32-573.55.4.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.7): Source: kernel-2.6.32-573.55.4.el6.src.rpm i386: kernel-2.6.32-573.55.4.el6.i686.rpm kernel-debug-2.6.32-573.55.4.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debug-devel-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-573.55.4.el6.i686.rpm kernel-devel-2.6.32-573.55.4.el6.i686.rpm kernel-headers-2.6.32-573.55.4.el6.i686.rpm perf-2.6.32-573.55.4.el6.i686.rpm perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-573.55.4.el6.noarch.rpm kernel-doc-2.6.32-573.55.4.el6.noarch.rpm kernel-firmware-2.6.32-573.55.4.el6.noarch.rpm ppc64: kernel-2.6.32-573.55.4.el6.ppc64.rpm kernel-bootwrapper-2.6.32-573.55.4.el6.ppc64.rpm kernel-debug-2.6.32-573.55.4.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm kernel-debug-devel-2.6.32-573.55.4.el6.ppc64.rpm kernel-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-573.55.4.el6.ppc64.rpm kernel-devel-2.6.32-573.55.4.el6.ppc64.rpm kernel-headers-2.6.32-573.55.4.el6.ppc64.rpm perf-2.6.32-573.55.4.el6.ppc64.rpm perf-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm s390x: kernel-2.6.32-573.55.4.el6.s390x.rpm kernel-debug-2.6.32-573.55.4.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.s390x.rpm kernel-debug-devel-2.6.32-573.55.4.el6.s390x.rpm kernel-debuginfo-2.6.32-573.55.4.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-573.55.4.el6.s390x.rpm kernel-devel-2.6.32-573.55.4.el6.s390x.rpm kernel-headers-2.6.32-573.55.4.el6.s390x.rpm kernel-kdump-2.6.32-573.55.4.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-573.55.4.el6.s390x.rpm kernel-kdump-devel-2.6.32-573.55.4.el6.s390x.rpm perf-2.6.32-573.55.4.el6.s390x.rpm perf-debuginfo-2.6.32-573.55.4.el6.s390x.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.s390x.rpm x86_64: kernel-2.6.32-573.55.4.el6.x86_64.rpm kernel-debug-2.6.32-573.55.4.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debug-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debug-devel-2.6.32-573.55.4.el6.i686.rpm kernel-debug-devel-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-573.55.4.el6.x86_64.rpm kernel-devel-2.6.32-573.55.4.el6.x86_64.rpm kernel-headers-2.6.32-573.55.4.el6.x86_64.rpm perf-2.6.32-573.55.4.el6.x86_64.rpm perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 6.7): i386: kernel-debug-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-2.6.32-573.55.4.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-573.55.4.el6.i686.rpm perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm python-perf-2.6.32-573.55.4.el6.i686.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm kernel-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-573.55.4.el6.ppc64.rpm perf-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm python-perf-2.6.32-573.55.4.el6.ppc64.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-573.55.4.el6.s390x.rpm kernel-debuginfo-2.6.32-573.55.4.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-573.55.4.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-573.55.4.el6.s390x.rpm perf-debuginfo-2.6.32-573.55.4.el6.s390x.rpm python-perf-2.6.32-573.55.4.el6.s390x.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-573.55.4.el6.x86_64.rpm perf-debuginfo-2.6.32-573.55.4.el6.x86_64.rpm python-perf-2.6.32-573.55.4.el6.x86_64.rpm python-perf-debuginfo-2.6.32-573.55.4.el6.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-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBWw1k4dzjgjWX9erEAQj0mQ/+Mn55yJvy7CVpgvtnBOyB28Irg/6qD74E jpVqCH7g163gY1r62H9sPak7oLz84U34xg+OKKbUgmef2kjhpx/zV4+8C5CpKvb1 GXNgUJ82Db6zXbauAwtpmFvLEZdMlxN52dR3sFS8MzDoSzYjIWmAi+9huIQv495s BFkIkaLVIyif15aWQHmXmNXxiiQLglMc6kcPez+PzuDw1p3/oIwKfLYmRLDv2lYr 2wEr6r8jBAdU9TZdOMjnSq0iuW8qbqb70OFiJjnx+dbgJUSTnz2v8STKl5XRU031 DrGWCzWWfGd4+kF1Wp3FX2+KH7qnpajnRW7M8/9JAGylFnFlN6VYk06ITYM+SrDj NufVSSif03/XEw4+ZylQCxmJxteFwJaYdDw3nLwXJIiM5mAzt+Dfbvuyl+/oBs0X I6HQzKdKXhtB26j6pA7s+kid+nAjsXr9udolPgrnqE/kX9NYgfCxxa6QEKLWBzRp 1UkVhl5qY3SmXUNxtTwf6h1V1716IK6uSG8oHK2JRYkSEKB9J8gmFIPL/l87qrdE MXXUDDgHEyyi7LP3uR7mliPFw4gYNlnvCuItZN5TvdtH1cozhO/hlrG/KiiLT3RR 0U8iXQCEUrB/kbfWgPje9yutX8qIOEIwdwJZI/hmjTwaYUu6KRn460VQ3u4brOoz qhDqm3JNYpw= =YWWQ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce