ID

VAR-201801-1711

CVE

CVE-2017-5754

TITLE

CPU hardware utilizing speculative execution may be vulnerable to cache side-channel attacks

DESCRIPTION

Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis of the data cache. Two vulnerabilities are identified, known as "Variant 3a" and "Variant 4". SpectreMeltdownCPU mechanism for triggeringSpeculative execution from branch predictionOut-of-order executionAffected platformsCPUs that perform speculative execution from branch predictionCPUs that allow memory reads in out-of-order instructionsDifficulty of successful attackHigh - Requires tailoring to the software environment of the victim processLow - Kernel memory access exploit code is mostly universalImpactCross- and intra-process (including kernel) memory disclosureKernel memory disclosure to userspaceSoftware mitigationsVariant 1: Compiler changes. Web browser updates to help prevent exploitation from JavaScriptVariant 2: Indirect Branch Restricted Speculation (IBRS). Note: The software mitigation for Spectre variant 2 requires CPU microcode updatesKernel page-table isolation (KPTI)CVE-2017-5715 Affected CVE-2017-5753 Affected CVE-2017-5754 Affected. Has speculative execution function and out-of-order execution function CPU Several researchers have reported methods of performing side-channel attacks against Has speculative execution function and out-of-order execution function CPU side-channel attack method against (Spectre and Meltdown) has been reported. For more information, Google Project Zero blog post in ("Reading privileged memory with a side-channel") or Graz University of Technology (TU Graz) information from researchers in ("Meltdown and Spectre") Please refer to. "Reading privileged memory with a side-channel"https://googleprojectzero.blogspot.jp/2018/01/reading-privileged-memory-with-side.html"Meltdown and Spectre"https://meltdownattack.com/Sensitive information can be obtained from processes running with user privileges. Spectre As for the attack, crafted Javascript by the code Javascript cannot be obtained from web It has been reported that data can be obtained during the browser process. CPUhardware is a set of firmware that runs in the CPU (Central Processing Unit) for managing and controlling the CPU. The Spectre vulnerability exists in the CPU processor core. Because Intel does not separate low-privileged applications from accessing kernel memory, an attacker can use a malicious application to obtain private data that should be quarantined. Attackers can exploit this issue to obtain sensitive information that may aid in further attacks. Intel and ARM CPU chips have an information disclosure vulnerability, which originates from a flaw in the processor data boundary mechanism. The following products and versions are affected: ARM Cortex-A75; Intel Xeon E5-1650 v3, v2, v4; Xeon E3-1265l v2, v3, v4; Xeon E3-1245 v2, v3, v5, v6; Xeon X7542 wait. ========================================================================== Ubuntu Security Notice USN-3597-2 March 15, 2018 linux-hwe vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. USNS 3541-2 and 3523-2 provided mitigations for Spectre and Meltdown (CVE-2017-5715, CVE-2017-5753, CVE-2017-5754) for the i386, amd64, and ppc64el architectures for Ubuntu 16.04 LTS. This flaw is known as Meltdown. This flaw is known as Spectre. (CVE-2017-5715, CVE-2017-5753) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.13.0-37-generic 4.13.0-37.42~16.04.1 linux-image-4.13.0-37-generic-lpae 4.13.0-37.42~16.04.1 linux-image-4.13.0-37-lowlatency 4.13.0-37.42~16.04.1 linux-image-generic-hwe-16.04 4.13.0.37.56 linux-image-generic-lpae-hwe-16.04 4.13.0.37.56 linux-image-lowlatency-hwe-16.04 4.13.0.37.56 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Thu, 04 Jan 2018 01:01:01 +0000 (UTC) -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2018:0008-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0008 Issue date: 2018-01-03 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6. 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 Desktop (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, 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 instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software mitigation for this hardware issue at a cost of potential performance penalty. Please refer to References section for further information about this issue and the performance impact. In this update mitigations for x86-64 architecture are provided. Variant CVE-2017-5753 triggers the speculative execution by performing a bounds-check bypass. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation 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 cross the syscall boundary and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5753, Important) Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation 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 cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715, Important) Variant CVE-2017-5754 relies on the fact that, on impacted microprocessors, during speculative execution of instruction permission faults, exception generation triggered by a faulting access is suppressed until the retirement of the whole instruction block. In a combination with the fact that memory accesses may populate the cache even when the block is being dropped and never committed (executed), an unprivileged local attacker could use this flaw to read privileged (kernel space) memory by conducting targeted cache side-channel attacks. (CVE-2017-5754, Important) Note: CVE-2017-5754 affects Intel x86-64 microprocessors. AMD x86-64 microprocessors are not affected by this issue. Red Hat would like to thank Google Project Zero for reporting these issues. 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/): 1519778 - CVE-2017-5753 hw: cpu: speculative execution bounds-check bypass 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 1519781 - CVE-2017-5754 hw: cpu: speculative execution permission faults handling 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: kernel-2.6.32-696.18.7.el6.src.rpm i386: kernel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-devel-2.6.32-696.18.7.el6.i686.rpm kernel-headers-2.6.32-696.18.7.el6.i686.rpm perf-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-696.18.7.el6.noarch.rpm kernel-doc-2.6.32-696.18.7.el6.noarch.rpm kernel-firmware-2.6.32-696.18.7.el6.noarch.rpm x86_64: kernel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm kernel-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-headers-2.6.32-696.18.7.el6.x86_64.rpm perf-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: kernel-2.6.32-696.18.7.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-696.18.7.el6.noarch.rpm kernel-doc-2.6.32-696.18.7.el6.noarch.rpm kernel-firmware-2.6.32-696.18.7.el6.noarch.rpm x86_64: kernel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm kernel-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-headers-2.6.32-696.18.7.el6.x86_64.rpm perf-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: kernel-2.6.32-696.18.7.el6.src.rpm i386: kernel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-devel-2.6.32-696.18.7.el6.i686.rpm kernel-headers-2.6.32-696.18.7.el6.i686.rpm perf-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-696.18.7.el6.noarch.rpm kernel-doc-2.6.32-696.18.7.el6.noarch.rpm kernel-firmware-2.6.32-696.18.7.el6.noarch.rpm ppc64: kernel-2.6.32-696.18.7.el6.ppc64.rpm kernel-bootwrapper-2.6.32-696.18.7.el6.ppc64.rpm kernel-debug-2.6.32-696.18.7.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm kernel-debug-devel-2.6.32-696.18.7.el6.ppc64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-696.18.7.el6.ppc64.rpm kernel-devel-2.6.32-696.18.7.el6.ppc64.rpm kernel-headers-2.6.32-696.18.7.el6.ppc64.rpm perf-2.6.32-696.18.7.el6.ppc64.rpm perf-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm s390x: kernel-2.6.32-696.18.7.el6.s390x.rpm kernel-debug-2.6.32-696.18.7.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.s390x.rpm kernel-debug-devel-2.6.32-696.18.7.el6.s390x.rpm kernel-debuginfo-2.6.32-696.18.7.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-696.18.7.el6.s390x.rpm kernel-devel-2.6.32-696.18.7.el6.s390x.rpm kernel-headers-2.6.32-696.18.7.el6.s390x.rpm kernel-kdump-2.6.32-696.18.7.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-696.18.7.el6.s390x.rpm kernel-kdump-devel-2.6.32-696.18.7.el6.s390x.rpm perf-2.6.32-696.18.7.el6.s390x.rpm perf-debuginfo-2.6.32-696.18.7.el6.s390x.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.s390x.rpm x86_64: kernel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm kernel-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-headers-2.6.32-696.18.7.el6.x86_64.rpm perf-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-696.18.7.el6.ppc64.rpm perf-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm python-perf-2.6.32-696.18.7.el6.ppc64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-696.18.7.el6.s390x.rpm kernel-debuginfo-2.6.32-696.18.7.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-696.18.7.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-696.18.7.el6.s390x.rpm perf-debuginfo-2.6.32-696.18.7.el6.s390x.rpm python-perf-2.6.32-696.18.7.el6.s390x.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: kernel-2.6.32-696.18.7.el6.src.rpm i386: kernel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-devel-2.6.32-696.18.7.el6.i686.rpm kernel-headers-2.6.32-696.18.7.el6.i686.rpm perf-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-696.18.7.el6.noarch.rpm kernel-doc-2.6.32-696.18.7.el6.noarch.rpm kernel-firmware-2.6.32-696.18.7.el6.noarch.rpm x86_64: kernel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debug-devel-2.6.32-696.18.7.el6.i686.rpm kernel-debug-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm kernel-devel-2.6.32-696.18.7.el6.x86_64.rpm kernel-headers-2.6.32-696.18.7.el6.x86_64.rpm perf-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-2.6.32-696.18.7.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-696.18.7.el6.i686.rpm perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm python-perf-2.6.32-696.18.7.el6.i686.rpm python-perf-debuginfo-2.6.32-696.18.7.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-696.18.7.el6.x86_64.rpm perf-debuginfo-2.6.32-696.18.7.el6.x86_64.rpm python-perf-2.6.32-696.18.7.el6.x86_64.rpm python-perf-debuginfo-2.6.32-696.18.7.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5753 https://access.redhat.com/security/cve/CVE-2017-5715 https://access.redhat.com/security/cve/CVE-2017-5754 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 iD8DBQFaTXwuXlSAg2UNWIIRAp3LAKCNdSqjVu7zsXcUTnpGuuQAuUlTpwCfTE/O OR+iGnoY+cALbsBWKwbmzQM= =V4ow -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Security Fix(es): * hw: cpu: speculative execution permission faults handling (CVE-2017-5754) * Kernel: error in exception handling leads to DoS (CVE-2018-8897) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * The kernel build requirements have been updated to the GNU Compiler Collection (GCC) compiler version that has the support for Retpolines. The Retpolines mechanism is a software construct that leverages specific knowledge of the underlying hardware to mitigate the branch target injection, also known as Spectre variant 2 vulnerability described in CVE-2017-5715. (BZ#1554251) 4. 6.5) - x86_64 3. 7) - noarch, 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

IOT TAXONOMY

AFFECTED PRODUCTS