ID

VAR-201905-1248

CVE

CVE-2019-11091

TITLE

Multiple Intel Product Information Disclosure Vulnerabilities (CNVD-2019-22234)

DESCRIPTION

Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here: https://www.intel.com/content/dam/www/public/us/en/documents/corporate-information/SA00233-microcode-update-guidance_05132019.pdf. Intel Xeon Scalable Processors and so on are products of Intel Corporation of the United States. Intel XeonScalable Processors is a scalable server central processing unit (CPU). IntelXeonProcessorE7v4Family is a XeonE7 series server central processing unit (CPU). IntelXeonProcessorE5v4Family is a XeonE5 series server central processing unit (CPU). An information disclosure vulnerability exists in several Intel products. The vulnerability stems from errors in the configuration of the network system or product during operation. An unauthorized attacker can exploit the vulnerability to obtain sensitive information about the affected component. The following products and versions are affected: Intel Xeon Scalable Processors; Xeon Processor E7 v4 Family; Xeon Processor E5 v4 Family; Xeon Processor E3 v6 Family; Xeon Processor E3 v4 Family; Xeon Processor E; Xeon E Processor; Xeon D Processor; Puma; Pentium Processor Silver Series; Pentium Processor N Series; Pentium Processor J Series; Pentium Gold Processor Series; Mobile Communications Platforms; Microcode; Core X series Processors; Celeron Processor N Series; Celeron Processor J Series; Celeron Processor G Series; Atom Processor X Series ;Atom Processor E3900 Series;Atom Processor E3800 Series;Atom Processor. The vulnerability is due to improper memory operations that could expose a side channel on the affected system. A successful exploit could be used to conduct further attacks. Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. A third-party patch is also available. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. (CVE-2019-11091) 4. Once all virtual machines have shut down, start them again for this update to take effect. 7.5) - ppc64, ppc64le, s390x, x86_64 3. Description: The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. In addition this update provides mitigations for the "TSX Asynchronous Abort" speculative side channel attack. For additional information please refer to https://xenbits.xen.org/xsa/advisory-305.html For the oldstable distribution (stretch), these problems have been fixed in version 4.8.5.final+shim4.10.4-1+deb9u12. Note that this will be the last security update for Xen in the oldstable distribution; upstream support for the 4.8.x branch ended by the end of December 2019. If you rely on security support for your Xen installation an update to the stable distribution (buster) is recommended. For the stable distribution (buster), these problems have been fixed in version 4.11.3+24-g14b62ab3e5-1~deb10u1. We recommend that you upgrade your xen packages. For the detailed security status of xen please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xen Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAl4c7kEACgkQEMKTtsN8 TjYTuQ//R8WXtoC9qnD7wrV1E9skzu0YgXXUJDgaY6V2cTxRZ9n+RC7szVBXqfjJ OzOhNDESTG1aeOg/vnwHgDLMigIe5HlNSYPMXFk9IqOtsRTaP+Ddp1e/msfudYqP rOiI+NzRk2MnFwT348SCuJK7tS/6coj2IECaYc+LOMp05eg+y4r+KLc6FFWm/UEB 9M0SQMv6vMHaSCqJ7OlzE9j1pta3qPHp6vDpDQC0ngjvTJI85Z6l1p2dJ600bcZR Am4nl/1va8Mxc6hFYQ0h8TV2leELsw3B4f5f4LPKh5U7ZiHM5DfWGZLKxf/SJRpf brt0wwYABM0qMqqelrEZOHWqdFg17ozYkNhuUYYLS3P/AWiOZURHq/xszsv98dGh EUzMPL/P0mHyxrOlG8BrhaZ0O2FfAABRdfNDEO4pDGQSFYYpniOW9a+6yZsmKJDg njryOlSwXa/yrqde5JSqDlJFtwnRZu5IhdeCERXfczpauBrqOzUCUX1n72JSrtlD TUeMMj3QBbuLtJhFbQZH+/dqbQlYKu0u7VPA5fP+7nxsG+9NqwRHv6J2lh0YKXYz ej2WFpM+oBpr12dtFx2buZVzZofHGZd5y1kjGq0yRwnBSrdSKYC5dhtX32weHfSL jnN2rWTafoKwSOJvvofoMjmjcYwTfBzorTO1EX01FPxZqy/nrsA=3Qmh -----END PGP SIGNATURE----- . Software Description: - intel-microcode: Processor microcode for Intel CPUs Details: USN-3977-1 and USN-3977-2 provided mitigations for Microarchitectural Data Sampling (MDS) vulnerabilities in Intel Microcode for a large number of Intel processor families. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2019:1168-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1168 Issue date: 2019-05-14 CVE Names: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7. 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) - noarch, x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A flaw was found in the implementation of the "fill buffer", a mechanism used by modern CPUs when a cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page fault, the execution will continue speculatively with incorrect data from the fill buffer while the data is fetched from higher level caches. This response time can be measured to infer data in the fill buffer. (CVE-2018-12130) * Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126) * Microprocessors use a ‘load port’ subcomponent to perform load operations from memory or IO. During a load operation, the load port receives data from the memory or IO subsystem and then provides the data to the CPU registers and operations in the CPU’s pipelines. Stale load operations results are stored in the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a timing side-channel. (CVE-2019-11091) 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. 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/): 1646781 - CVE-2018-12126 hardware: Microarchitectural Store Buffer Data Sampling (MSBDS) 1646784 - CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) 1667782 - CVE-2018-12127 hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS) 1705312 - CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: kernel-3.10.0-957.12.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.2.el7.noarch.rpm kernel-doc-3.10.0-957.12.2.el7.noarch.rpm x86_64: bpftool-3.10.0-957.12.2.el7.x86_64.rpm kernel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-headers-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.2.el7.x86_64.rpm perf-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: kernel-3.10.0-957.12.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.2.el7.noarch.rpm kernel-doc-3.10.0-957.12.2.el7.noarch.rpm x86_64: bpftool-3.10.0-957.12.2.el7.x86_64.rpm kernel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-headers-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.2.el7.x86_64.rpm perf-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: kernel-3.10.0-957.12.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.2.el7.noarch.rpm kernel-doc-3.10.0-957.12.2.el7.noarch.rpm ppc64: kernel-3.10.0-957.12.2.el7.ppc64.rpm kernel-bootwrapper-3.10.0-957.12.2.el7.ppc64.rpm kernel-debug-3.10.0-957.12.2.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm kernel-debug-devel-3.10.0-957.12.2.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.12.2.el7.ppc64.rpm kernel-devel-3.10.0-957.12.2.el7.ppc64.rpm kernel-headers-3.10.0-957.12.2.el7.ppc64.rpm kernel-tools-3.10.0-957.12.2.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm kernel-tools-libs-3.10.0-957.12.2.el7.ppc64.rpm perf-3.10.0-957.12.2.el7.ppc64.rpm perf-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm python-perf-3.10.0-957.12.2.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm ppc64le: kernel-3.10.0-957.12.2.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debug-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.12.2.el7.ppc64le.rpm kernel-devel-3.10.0-957.12.2.el7.ppc64le.rpm kernel-headers-3.10.0-957.12.2.el7.ppc64le.rpm kernel-tools-3.10.0-957.12.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm kernel-tools-libs-3.10.0-957.12.2.el7.ppc64le.rpm perf-3.10.0-957.12.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm python-perf-3.10.0-957.12.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm s390x: kernel-3.10.0-957.12.2.el7.s390x.rpm kernel-debug-3.10.0-957.12.2.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.s390x.rpm kernel-debug-devel-3.10.0-957.12.2.el7.s390x.rpm kernel-debuginfo-3.10.0-957.12.2.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-957.12.2.el7.s390x.rpm kernel-devel-3.10.0-957.12.2.el7.s390x.rpm kernel-headers-3.10.0-957.12.2.el7.s390x.rpm kernel-kdump-3.10.0-957.12.2.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-957.12.2.el7.s390x.rpm kernel-kdump-devel-3.10.0-957.12.2.el7.s390x.rpm perf-3.10.0-957.12.2.el7.s390x.rpm perf-debuginfo-3.10.0-957.12.2.el7.s390x.rpm python-perf-3.10.0-957.12.2.el7.s390x.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.s390x.rpm x86_64: bpftool-3.10.0-957.12.2.el7.x86_64.rpm kernel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-headers-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.2.el7.x86_64.rpm perf-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): ppc64: kernel-debug-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-957.12.2.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-957.12.2.el7.ppc64.rpm perf-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debug-devel-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-957.12.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-957.12.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: kernel-3.10.0-957.12.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-957.12.2.el7.noarch.rpm kernel-doc-3.10.0-957.12.2.el7.noarch.rpm x86_64: bpftool-3.10.0-957.12.2.el7.x86_64.rpm kernel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-devel-3.10.0-957.12.2.el7.x86_64.rpm kernel-headers-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-957.12.2.el7.x86_64.rpm perf-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: kernel-debug-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-957.12.2.el7.x86_64.rpm perf-debuginfo-3.10.0-957.12.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-957.12.2.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-2018-12126 https://access.redhat.com/security/cve/CVE-2018-12127 https://access.redhat.com/security/cve/CVE-2018-12130 https://access.redhat.com/security/cve/CVE-2019-11091 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/mds 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXNsSddzjgjWX9erEAQiDGRAAo9mifOQBxfgWFR3QSCU6uLW6taihgkQ+ E9S9uNH1yymcF7UoAetYY9RhBPF/dczLoLxhUFeWDZxrsAW0QDuW/lHWwewnk1Cp XjYSj6wMCJqFCzt1g4q8LXzrY0mrKoOZQTuB13rV6wYB0FVAySKUr6pGDUfsmVoD X7Cbwr7dizJqIT6I0Fj9//OlRciyi5Wls5R8r1P9tbznAR1621uuUY5+fsDIkJwz usZmx6HT/a/P4L2AqMUH7iBi159uYg99HdlEFhT94NF1DOHfn15wMiuQidA+b1iy 9y8EJkLvkI6Oyiae7Aq+lsehk1wtZH4D/Fyqy/uPsJEbIdKoa3C4oIMvIaFvczCE INLrNjz5NxJxI8yVF6Hd4P6yy11BO4LvkDWYfAEzLobaAgmXz+ZRT1PjV1hts+kC Y4AzB+ihaNpG4gCj5SES0xYOuwUlva9QWlTGpau2qFCAwgzT9JylYYN7oBnr9VBc 3bSc6uTVQW5TAIoKpIAt6XLeQa4cFhI47HA5iyzoIJKnbxfmh0EWGBYiVhuXINcl wIggLiY8VRr0ZlFykx3XHXHM2Wa4iMS5E48QpL10l1rm93dtumjTIFUdG8eJEgGI 4hUX7anY9A8IyMSPK4McQt19BzAfcWPuKziAcful7jBLtPvhhCRfNjgo9+x+QwK4 ub8jpANp7mM= =Ik8D -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. ========================================================================== Ubuntu Security Notice USN-3981-1 May 14, 2019 linux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oem: Linux kernel for OEM processors - linux-oracle: Linux kernel for Oracle Cloud systems - linux-raspi2: Linux kernel for Raspberry Pi 2 - linux-snapdragon: Linux kernel for Snapdragon processors Details: Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan Horea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa Milburn, Sebastian \xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss discovered that memory previously stored in microarchitectural fill buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2018-12130) Brandon Falk, Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Stephan van Schaik, Alyssa Milburn, Sebastian \xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and Cristiano Giuffrida discovered that memory previously stored in microarchitectural load ports of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2018-12127) Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Marina Minkin, Daniel Moghimi, Moritz Lipp, Michael Schwarz, Jo Van Bulck, Daniel Genkin, Daniel Gruss, Berk Sunar, Frank Piessens, and Yuval Yarom discovered that memory previously stored in microarchitectural store buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2018-12126) Vasily Averin and Evgenii Shatokhin discovered that a use-after-free vulnerability existed in the NFS41+ subsystem when multiple network namespaces are in use. A local attacker in a container could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-16884) Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Volodrmyr Pikhur, Moritz Lipp, Michael Schwarz, Daniel Gruss, Stephan van Schaik, Alyssa Milburn, Sebastian \xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and Cristiano Giuffrida discovered that uncacheable memory previously stored in microarchitectural buffers of an Intel CPU core may be exposed to a malicious process that is executing on the same CPU core. (CVE-2019-11091) Matteo Croce, Natale Vinto, and Andrea Spagnolo discovered that the cgroups subsystem of the Linux kernel did not properly account for SCTP socket buffers. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-3874) Alex Williamson discovered that the vfio subsystem of the Linux kernel did not properly limit DMA mappings. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-3882) Hugues Anguelkov discovered that the Broadcom Wifi driver in the Linux kernel contained a heap buffer overflow. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-9500) Hugues Anguelkov discovered that the Broadcom Wifi driver in the Linux kernel did not properly prevent remote firmware events from being processed for USB Wifi devices. A physically proximate attacker could use this to send firmware events to the device. (CVE-2019-9503) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1013-oracle 4.15.0-1013.15 linux-image-4.15.0-1032-gcp 4.15.0-1032.34 linux-image-4.15.0-1034-kvm 4.15.0-1034.34 linux-image-4.15.0-1036-raspi2 4.15.0-1036.38 linux-image-4.15.0-1038-oem 4.15.0-1038.43 linux-image-4.15.0-1039-aws 4.15.0-1039.41 linux-image-4.15.0-1053-snapdragon 4.15.0-1053.57 linux-image-4.15.0-50-generic 4.15.0-50.54 linux-image-4.15.0-50-generic-lpae 4.15.0-50.54 linux-image-4.15.0-50-lowlatency 4.15.0-50.54 linux-image-4.15.0-50-snapdragon 4.15.0-50.54 linux-image-aws 4.15.0.1039.38 linux-image-gcp 4.15.0.1032.34 linux-image-generic 4.15.0.50.52 linux-image-generic-lpae 4.15.0.50.52 linux-image-kvm 4.15.0.1034.34 linux-image-lowlatency 4.15.0.50.52 linux-image-oem 4.15.0.1038.43 linux-image-oracle 4.15.0.1013.16 linux-image-powerpc-e500mc 4.15.0.50.52 linux-image-powerpc-smp 4.15.0.50.52 linux-image-powerpc64-emb 4.15.0.50.52 linux-image-powerpc64-smp 4.15.0.50.52 linux-image-raspi2 4.15.0.1036.34 linux-image-snapdragon 4.15.0.1053.56 linux-image-virtual 4.15.0.50.52 After a standard system update you need to reboot your computer to make all the necessary changes. Please note that fully mitigating the Microarchitectural Data Sampling (MDS) issues (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, and CVE-2019-11091) requires corresponding processor microcode/firmware updates or, in virtual environments, hypervisor updates

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

information disclosure

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-11-18T14:29:22.704000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE