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security advisoryupdatecriticalRed Hat Enterprise 7.4 RHSA-2018:1635 Critical: Kernel Security Patch
An update for kernel is now available for Red Hat Enterprise Linux 7.4 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,. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2018:1635-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1635 Issue date: 2018-05-22 CVE Names: CVE-2018-3639 ==================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.4 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 ComputeNode EUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.4) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.4) - noarch, ppc64, ppc64le, 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 intothe 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 x86-64 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 ComputeNode EUS (v.7.4): Source: kernel-3.10.0-693.25.7.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.25.7.el7.noarch.rpm kernel-doc-3.10.0-693.25.7.el7.noarch.rpm x86_64: kernel-3.10.0-693.25.7.el7.x86_64.rpm kernel-debug-3.10.0-693.25.7.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.25.7.el7.x86_64.rpm kernel-devel-3.10.0-693.25.7.el7.x86_64.rpm kernel-headers-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.25.7.el7.x86_64.rpm perf-3.10.0-693.25.7.el7.x86_64.rpm perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm python-perf-3.10.0-693.25.7.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4): x86_64: kernel-debug-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.25.7.el7.x86_64.rpm perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v.7.4): Source: kernel-3.10.0-693.25.7.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-693.25.7.el7.noarch.rpm kernel-doc-3.10.0-693.25.7.el7.noarch.rpm ppc64: kernel-3.10.0-693.25.7.el7.ppc64.rpm kernel-bootwrapper-3.10.0-693.25.7.el7.ppc64.rpm kernel-debug-3.10.0-693.25.7.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm kernel-debug-devel-3.10.0-693.25.7.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.25.7.el7.ppc64.rpm kernel-devel-3.10.0-693.25.7.el7.ppc64.rpm kernel-headers-3.10.0-693.25.7.el7.ppc64.rpm kernel-tools-3.10.0-693.25.7.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm kernel-tools-libs-3.10.0-693.25.7.el7.ppc64.rpm perf-3.10.0-693.25.7.el7.ppc64.rpm perf-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm python-perf-3.10.0-693.25.7.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm ppc64le: kernel-3.10.0-693.25.7.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debug-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.25.7.el7.ppc64le.rpm kernel-devel-3.10.0-693.25.7.el7.ppc64le.rpm kernel-headers-3.10.0-693.25.7.el7.ppc64le.rpm kernel-tools-3.10.0-693.25.7.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm kernel-tools-libs-3.10.0-693.25.7.el7.ppc64le.rpm perf-3.10.0-693.25.7.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm python-perf-3.10.0-693.25.7.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm s390x: kernel-3.10.0-693.25.7.el7.s390x.rpm kernel-debug-3.10.0-693.25.7.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-693.25.7.el7.s390x.rpm kernel-debug-devel-3.10.0-693.25.7.el7.s390x.rpm kernel-debuginfo-3.10.0-693.25.7.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-693.25.7.el7.s390x.rpm kernel-devel-3.10.0-693.25.7.el7.s390x.rpm kernel-headers-3.10.0-693.25.7.el7.s390x.rpm kernel-kdump-3.10.0-693.25.7.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-693.25.7.el7.s390x.rpm kernel-kdump-devel-3.10.0-693.25.7.el7.s390x.rpm perf-3.10.0-693.25.7.el7.s390x.rpm perf-debuginfo-3.10.0-693.25.7.el7.s390x.rpm python-perf-3.10.0-693.25.7.el7.s390x.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.s390x.rpm x86_64: kernel-3.10.0-693.25.7.el7.x86_64.rpm kernel-debug-3.10.0-693.25.7.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debug-devel-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.25.7.el7.x86_64.rpm kernel-devel-3.10.0-693.25.7.el7.x86_64.rpm kernel-headers-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-libs-3.10.0-693.25.7.el7.x86_64.rpm perf-3.10.0-693.25.7.el7.x86_64.rpm perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm python-perf-3.10.0-693.25.7.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v.7.4): noarch: kernel-doc-3.10.0-693.25.7.el7.noarch.rpm ppc64: kernel-debug-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm kernel-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-693.25.7.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-693.25.7.el7.ppc64.rpm perf-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debug-devel-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-693.25.7.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-693.25.7.el7.ppc64le.rpm perf-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-693.25.7.el7.x86_64.rpm perf-debuginfo-3.10.0-693.25.7.el7.x86_64.rpm python-perf-debuginfo-3.10.0-693.25.7.el7.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: GnuPGv1 iQIVAwUBWwRM1tzjgjWX9erEAQjFtRAAkMSWP6YRdDLy+As7JVkZmb/hBbbgNndj +45nJFa+lTikQ5Y09z7Iwcf0qpSVnNbaYtvUuDGzvArwojDuXnBqw8MDE6mhvr6K IrOopPKrT72+ir/mfS01+U0mmOmqZx/TN5X0eIhvZCVBO5fz08KbFObpdZTqYbKu TzvWrTL+lZtZUpr3T9//m6bdAdeqr0dIQxv2tVVPFqRcyUb0ZPs1DRSX5vjHdc+y TY8AN4cuC7WNMyMALPOtiH4UHRcnGqeewPqatzgyKEUV9Eig4zv+GTSfg2kjWNMm CTUZcdw/enVJK6UVak6QH07omdA9OPWeMemZffzvUnllKtJYRJQdiz9yk2qGzL0d L3ssqE7qwBG4DhUQKIvodhJa2AT12FJTETzCJPY3DDR7aHxPsaGqSIyM93M2EIyO ncHYKcqFDxJPiDxTEXytLxMV7+qLVFT+YBvYSthYTVt+CsAfgHpdbeKiJN1hpfYu Hb37me5byo8Xbh8VIHDLEnhSQFVm9pmcU0ho/VG/8vvwru4JSuiETZ+cA4uD/fWn jqffhmkg9fzudArekFSwWj/rnaIM8Lk9Ie48edzjAA+Rcn7ngKM2j63eXNuuyf1l GcdyIWvlIUMAIgOPo8mrmzJjogYTtzznFmyEz0DoFX4UeHdee+DWwsvmmdOoUnbm V24zaqNhIAE=ZVEs -----END PGP SIGNATURE----- -- RHSA-announce mailing list
May 22, 2018
•Important
Red Hat
200
security advisorykernel updatesecurity fixSciLinux SL6 Important: SLSA-2018-1651-1 Kernel Mitigation for Cache Attack
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 v [More...]. Synopsis: Important: kernel security and bug fix update Advisory ID: SLSA-2018:1651-1 Issue Date: 2018-05-22 CVE Numbers: CVE-2018-3639 -- 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. In this update mitigations for x86 (both 32 and 64 bit) architecture are provided. Bug Fix(es): * Previously, an erroneous code in the x86 kexec system call path caused a memory corruption. As a consequence, the system became unresponsive with the following kernel stack trace: 'WARNING: CPU: 13 PID: 36409 at lib/list_debug.c:59 __list_del_entry+0xa1/0xd0 list_del corruption. prev-> next should be ffffdd03fddeeca0, but was (null)' This update ensures that the code doesnot corrupt memory. As a result, the operating system no longer hangs. -- SL6 x86_64 kernel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.30.1.el6.x86_64.rpm kernel-devel-2.6.32-696.30.1.el6.x86_64.rpm kernel-headers-2.6.32-696.30.1.el6.x86_64.rpm perf-2.6.32-696.30.1.el6.x86_64.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.x86_64.rpm python-perf-2.6.32-696.30.1.el6.x86_64.rpm i386 kernel-2.6.32-696.30.1.el6.i686.rpm kernel-debug-2.6.32-696.30.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debug-devel-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-2.6.32-696.30.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.30.1.el6.i686.rpm kernel-devel-2.6.32-696.30.1.el6.i686.rpm kernel-headers-2.6.32-696.30.1.el6.i686.rpm perf-2.6.32-696.30.1.el6.i686.rpm perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-debuginfo-2.6.32-696.30.1.el6.i686.rpm python-perf-2.6.32-696.30.1.el6.i686.rpm noarch kernel-abi-whitelists-2.6.32-696.30.1.el6.noarch.rpm kernel-doc-2.6.32-696.30.1.el6.noarch.rpm kernel-firmware-2.6.32-696.30.1.el6.noarch.rpm - Scientific Linux Development Team . Crucial core system patch for SL6 tackling speculative execution vulnerabilities to enhance overall system security.. Kernel Update, Cache Attack, Performance Optimization, Security Advisory, Speculative Execution. . Severity:Important. LinuxSecurity.com Team
May 22, 2018
•Important
Scientific Linux
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