ID

VAR-201905-0710

CVE

CVE-2018-12127

TITLE

Multiple Intel Product Information Disclosure Vulnerability

DESCRIPTION

Microarchitectural Load Port Data Sampling (MLPDS): Load ports 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 are all products of Intel Corporation of the United States. Intel Xeon Scalable Processors are a scalable server central processing unit (CPU). Intel Xeon Processor E7 v4 Family is a Xeon E7 series server central processing unit (CPU). Intel Xeon Processor E5 v4 Family is a Xeon E5 series server central processing unit (CPU). Information disclosure vulnerabilities exist in several Intel products. This vulnerability stems from configuration errors in network systems or products during operation. 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. Intel has confirmed the vulnerability and released software updates. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2019:1169-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1169 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 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): * 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. Bug Fix(es): * aio O_DIRECT writes to non-page-aligned file locations on ext4 can result in the overlapped portion of the page containing zeros (BZ#1686170) * Tolerate new s390x crypto hardware for migration (BZ#1695496) 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 Desktop (v. 6): Source: kernel-2.6.32-754.14.2.el6.src.rpm i386: kernel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-devel-2.6.32-754.14.2.el6.i686.rpm kernel-headers-2.6.32-754.14.2.el6.i686.rpm perf-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-754.14.2.el6.noarch.rpm kernel-doc-2.6.32-754.14.2.el6.noarch.rpm kernel-firmware-2.6.32-754.14.2.el6.noarch.rpm x86_64: kernel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm kernel-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-headers-2.6.32-754.14.2.el6.x86_64.rpm perf-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: kernel-2.6.32-754.14.2.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-754.14.2.el6.noarch.rpm kernel-doc-2.6.32-754.14.2.el6.noarch.rpm kernel-firmware-2.6.32-754.14.2.el6.noarch.rpm x86_64: kernel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm kernel-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-headers-2.6.32-754.14.2.el6.x86_64.rpm perf-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: kernel-2.6.32-754.14.2.el6.src.rpm i386: kernel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-devel-2.6.32-754.14.2.el6.i686.rpm kernel-headers-2.6.32-754.14.2.el6.i686.rpm perf-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-754.14.2.el6.noarch.rpm kernel-doc-2.6.32-754.14.2.el6.noarch.rpm kernel-firmware-2.6.32-754.14.2.el6.noarch.rpm ppc64: kernel-2.6.32-754.14.2.el6.ppc64.rpm kernel-bootwrapper-2.6.32-754.14.2.el6.ppc64.rpm kernel-debug-2.6.32-754.14.2.el6.ppc64.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm kernel-debug-devel-2.6.32-754.14.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-754.14.2.el6.ppc64.rpm kernel-devel-2.6.32-754.14.2.el6.ppc64.rpm kernel-headers-2.6.32-754.14.2.el6.ppc64.rpm perf-2.6.32-754.14.2.el6.ppc64.rpm perf-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm s390x: kernel-2.6.32-754.14.2.el6.s390x.rpm kernel-debug-2.6.32-754.14.2.el6.s390x.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.s390x.rpm kernel-debug-devel-2.6.32-754.14.2.el6.s390x.rpm kernel-debuginfo-2.6.32-754.14.2.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-754.14.2.el6.s390x.rpm kernel-devel-2.6.32-754.14.2.el6.s390x.rpm kernel-headers-2.6.32-754.14.2.el6.s390x.rpm kernel-kdump-2.6.32-754.14.2.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-754.14.2.el6.s390x.rpm kernel-kdump-devel-2.6.32-754.14.2.el6.s390x.rpm perf-2.6.32-754.14.2.el6.s390x.rpm perf-debuginfo-2.6.32-754.14.2.el6.s390x.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.s390x.rpm x86_64: kernel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm kernel-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-headers-2.6.32-754.14.2.el6.x86_64.rpm perf-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm ppc64: kernel-debug-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm kernel-debuginfo-common-ppc64-2.6.32-754.14.2.el6.ppc64.rpm perf-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm python-perf-2.6.32-754.14.2.el6.ppc64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.ppc64.rpm s390x: kernel-debug-debuginfo-2.6.32-754.14.2.el6.s390x.rpm kernel-debuginfo-2.6.32-754.14.2.el6.s390x.rpm kernel-debuginfo-common-s390x-2.6.32-754.14.2.el6.s390x.rpm kernel-kdump-debuginfo-2.6.32-754.14.2.el6.s390x.rpm perf-debuginfo-2.6.32-754.14.2.el6.s390x.rpm python-perf-2.6.32-754.14.2.el6.s390x.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.s390x.rpm x86_64: kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: kernel-2.6.32-754.14.2.el6.src.rpm i386: kernel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-devel-2.6.32-754.14.2.el6.i686.rpm kernel-headers-2.6.32-754.14.2.el6.i686.rpm perf-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm noarch: kernel-abi-whitelists-2.6.32-754.14.2.el6.noarch.rpm kernel-doc-2.6.32-754.14.2.el6.noarch.rpm kernel-firmware-2.6.32-754.14.2.el6.noarch.rpm x86_64: kernel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debug-devel-2.6.32-754.14.2.el6.i686.rpm kernel-debug-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm kernel-devel-2.6.32-754.14.2.el6.x86_64.rpm kernel-headers-2.6.32-754.14.2.el6.x86_64.rpm perf-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: kernel-debug-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-2.6.32-754.14.2.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-754.14.2.el6.i686.rpm perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm python-perf-2.6.32-754.14.2.el6.i686.rpm python-perf-debuginfo-2.6.32-754.14.2.el6.i686.rpm x86_64: kernel-debug-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-754.14.2.el6.x86_64.rpm perf-debuginfo-2.6.32-754.14.2.el6.x86_64.rpm python-perf-2.6.32-754.14.2.el6.x86_64.rpm python-perf-debuginfo-2.6.32-754.14.2.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-2018-12126 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 iQIVAwUBXNsJsNzjgjWX9erEAQhvqA//djCoTZz9c1pgUPl2id5ClYVeEOyRXu8E IoQ25ZtL8p88QA3mArktvi8zVac2I0Ij368btFWChg5jDKjKYunmA9/JT3k0h9oU uFkwnIZycKIwjyoppnJ+0ck9ZtcXYfwVg9vKSQ314+wFWgjP6uA5u826lVmRVp/L ogMeB7I0GMA7Y2aLwL0jawrUlV/yPTDypkTgeCYkEJHduL6TYqBenfU4h44HuC2o Fmf4Efojx95jrMUb5Tj3bdsbexrhoQ4CjnQlUJjNcvQEGEVIYvzuRmXSN5xdoRRh DZ1UICINmJzD5+NKdNJWTrEP8evvmw7IgCNqRUhA25IBBH86cSadt6gqalxh9/DL RFGbNOK2Ny39NA/rM1NsAE0kgiBtaBJNeNCvGBlJDUufNFeZn9el9X3he/30LY1X zOV1Xn3d+9lE6RoXDvnoKaRX52TS+X+Z03Mhr0V0r56MnNu/QmtbaK2y8KBs4Vm4 w41G0BsEkovXJ3AEobnAw0/tnaAQJgfCHIINrknGOPqCrj3OLhpGZgYeYgZZQTei b8GmQADmLE8inpxncYFcodh+5ar4aVDjsLCUV5hUJBqPwR6JsW515sWBQPnaUBiw vLWsvZag1DjpIqrP5JQG3jYtT8XW5/YUM1ey2TPMBuPX/1EVP6DNMcixlaVaJF7P rTvFzC19U40= =FB27 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================== Ubuntu Security Notice USN-3980-2 May 14, 2019 linux-hwe, linux-azure 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. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.10 for Ubuntu 18.04 LTS. 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. A local attacker could use this to expose sensitive information. (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. A local attacker could use this to expose sensitive information. (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. A local attacker could use this to expose sensitive information. (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. A local attacker could use this to expose sensitive information. (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) Marc Orr discovered that the KVM hypervisor implementation in the Linux kernel did not properly restrict APIC MSR register values when nested virtualization is used. An attacker in a guest vm could use this to cause a denial of service (host OS crash). (CVE-2019-3887) 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-4.18.0-1018-azure 4.18.0-1018.18~18.04.1 linux-image-4.18.0-20-generic 4.18.0-20.21~18.04.1 linux-image-4.18.0-20-generic-lpae 4.18.0-20.21~18.04.1 linux-image-4.18.0-20-lowlatency 4.18.0-20.21~18.04.1 linux-image-4.18.0-20-snapdragon 4.18.0-20.21~18.04.1 linux-image-azure 4.18.0.1018.17 linux-image-generic-hwe-18.04 4.18.0.20.70 linux-image-generic-lpae-hwe-18.04 4.18.0.20.70 linux-image-lowlatency-hwe-18.04 4.18.0.20.70 linux-image-snapdragon-hwe-18.04 4.18.0.20.70 linux-image-virtual-hwe-18.04 4.18.0.20.70 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. (CVE-2019-11091) * QEMU: device_tree: heap buffer overflow while loading device tree blob (CVE-2018-20815) * QEMU: rtl8139: integer overflow leads to buffer overflow (CVE-2018-17958) * QEMU: net: ignore packets with large size (CVE-2018-17963) * QEMU: scsi-generic: possible OOB access while handling inquiry request (CVE-2019-6501) * QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824) 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. Additional Changes: This update also fixes several bugs and adds various enhancements. Documentation for these changes is available from the Release Notes document linked to in the References section. Bugs fixed (https://bugzilla.redhat.com/): 1508708 - [data plane] Qemu-kvm core dumped when doing block-stream and block-job-cancel to a data disk with data-plane enabled 1526313 - Improve QEMU lock error info for hot-plugging same qcow2 image file twice in different target to VM 1531888 - Local VM and migrated VM on the same host can run with same RAW file as visual disk source while without shareable configured or lock manager enabled 1551486 - QEMU image locking needn't double open fd number (i.e. drop file-posix.c:s->lock_fd) 1585155 - QEMU core dumped when hotplug memory exceeding host hugepages and with discard-data=yes 1597482 - qemu crashed when disk enable the IOMMU 1598119 - "share-rw=on" does not work for luks format image 1603104 - Qemu Aborted (core dumped) for 'qemu-kvm: Failed to lock byte 100' when remote NFS or GlusterFS volume stopped during the block mirror(or block commit/stream) process 1607768 - qemu aborted when start guest with a big iothreads 1608226 - [virtual-network][mq] prompt warning "qemu-kvm: unable to start vhost net: 14: falling back on userspace virtio" when boot with win8+ guests with multi-queue 1610461 - High Host CPU load for Windows 10 Guests (Update 1803) when idle 1614302 - qemu-kvm: Could not find keytab file: /etc/qemu/krb5.tab: No such file or directory 1614610 - Guest quit with error when hotunplug cpu 1619778 - Ballooning is incompatible with vfio assigned devices, but not prevented 1620373 - Failed to do migration after hotplug and hotunplug the ivshmem device 1623986 - block-commit can't be used with -blockdev 1624009 - allow backing of pflash via -blockdev 1627272 - boot guest with q35+vIOMMU+ device assignment, qemu crash when return assigned network devices from vfio driver to ixgbe in guest 1628098 - [Intel 7.7 BUG][KVM][Crystal Ridge]object_get_canonical_path_component: assertion failed: (obj->parent != NULL) 1629056 - qemu NBD server failure with block status of dirty bitmaps 1629717 - qemu_ram_mmap: Assertion `is_power_of_2(align)' failed 1629720 - [Intel 7.6 BUG][Crystal Ridge] pc_dimm_get_free_addr: assertion failed: (QEMU_ALIGN_UP(address_space_start, align) == address_space_start) 1631052 - x-block-dirty-bitmap-merge into a disabled bitmap dest causes assert 1631227 - Qemu Core dump when quit vm that's in status "paused(io-error)" with data plane enabled 1631615 - Wrong werror default for -device drive=<node-name> 1631877 - qemu dirty bitmap merge fails to update count 1633150 - Cross migration from RHEL7.5 to RHEL7.6 fails with cpu flag stibp 1633536 - Qemu core dump when do migration after hot plugging a backend image with 'blockdev-add'(without the frontend) 1636712 - CVE-2018-17958 QEMU: rtl8139: integer overflow leads to buffer overflow 1636777 - CVE-2018-17963 QEMU: net: ignore packets with large size 1642551 - qemu-kvm-tools-rhev depends on libxkbcommon, but the RPM-level dependency is missing 1646781 - CVE-2018-12126 hardware: Microarchitectural Store Buffer Data Sampling (MSBDS) 1646784 - CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) 1648236 - QEMU doesn't expose rendernode option for egl-headless display type 1656913 - qcow2 cache is too small 1666336 - severe performance impact using encrypted Cinder volume (QEMU luks) 1666884 - persistent bitmaps prevent qcow2 image resize 1667320 - -blockdev: auto-read-only is ineffective for drivers on read-only whitelist 1667782 - CVE-2018-12127 hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS) 1668160 - CVE-2019-6501 QEMU: scsi-generic: possible OOB access while handling inquiry request 1668956 - incremental backup bitmap API needs a finalized interface 1672010 - [RHEL7]Qemu coredump when remove a persistent bitmap after vm re-start(dataplane enabled) 1673080 - "An unknown error has occurred" when using cdrom to install the system with two blockdev disks.(when choose installation destination) 1673397 - [RHEL.7] qemu-kvm core dumped after hotplug the deleted disk with iothread parameter 1673402 - Qemu core dump when start guest with two disks using same drive 1676728 - RHEL77: Run iotests as part of build process 1677073 - Backport additional QEMU 4.0 Bitmap API changes to RHEL 7.7 1678515 - CVE-2019-9824 QEMU: slirp: information leakage in tcp_emu() due to uninitialized stack variables 1685989 - Add facility to use block jobs with backing images without write permission 1691009 - NBD pull mode incremental backup API needs a finalized interface 1691018 - Fix iotest 226 for local development builds 1691048 - Add qemu-img info support for querying bitmaps offline 1691563 - QEMU NBD Feature parity roundup (QEMU 3.1.0) 1692018 - qemu-img: Protocol error: simple reply when structured reply chunk was expected 1693101 - CVE-2018-20815 QEMU: device_tree: heap buffer overflow while loading device tree blob 1703916 - Qemu core dump when quit vm after forbidden to do backup with a read-only bitmap 1705312 - CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) 1714160 - Guest with 'reservations' for a disk start failed 6. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 ============================================================================ FreeBSD-SA-19:26.mcu Security Advisory The FreeBSD Project Topic: Intel CPU Microcode Update Category: 3rd party Module: Intel CPU microcode Announced: 2019-11-12 Credits: Intel Affects: All supported versions of FreeBSD running on certain Intel CPUs. CVE Name: CVE-2019-11135, CVE-2019-11139, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2018-11091, CVE-2017-5715 For general information regarding FreeBSD Security Advisories, including descriptions of the fields above, security branches, and the following sections, please visit <URL:https://security.FreeBSD.org/>. Background - From time to time Intel releases new CPU microcode to address functional issues and security vulnerabilities. Such a release is also known as a Micro Code Update (MCU), and is a component of a broader Intel Platform Update (IPU). FreeBSD distributes CPU microcode via the devcpu-data port and package. II. Problem Description Starting with version 1.26, the devcpu-data port/package includes updates and mitigations for the following technical and security advisories (depending on CPU model). Intel TSX Updates (TAA) CVE-2019-11135 Voltage Modulation Vulnerability CVE-2019-11139 MD_CLEAR Operations CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2018-11091 TA Indirect Sharing CVE-2017-5715 EGETKEY CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2018-11091 JCC SKX102 Erratum Updated microcode includes mitigations for CPU issues, but may also cause a performance regression due to the JCC erratum mitigation. Please visit http://www.intel.com/benchmarks for further information. Please visit http://www.intel.com/security for detailed information on these advisories as well as a list of CPUs that are affected. III. Impact Operating a CPU without the latest microcode may result in erratic or unpredictable behavior, including system crashes and lock ups. Certain issues listed in this advisory may result in the leakage of privileged system information to unprivileged users. IV. Workaround To determine if TSX is present in your system, run the following: 1. kldload cpuctl 2. cpucontrol -i 7 /dev/cpuctl0 If bits 4 (0x10) and 11 (0x800) are set in the second response word (EBX), TSX is present. In the absence of updated microcode, TAA can be mitigated by enabling the MDS mitigation: 3. sysctl hw.mds_disable=1 Systems must be running FreeBSD 11.3, FreeBSD 12.1, or later for this to work. *IMPORTANT* If your use case can tolerate leaving the CPU issues unmitigated and cannot tolerate a performance regression, ensure that the devcpu-data package is not installed or is locked at 1.25 or earlier. # pkg delete devcpu-data or # pkg lock devcpu-data Later versions of the LLVM and GCC compilers will include changes that partially relieve the peformance impact. V. Solution Install the latest Intel Microcode Update via the devcpu-data port/package, version 1.26 or later. Updated microcode adds the ability to disable TSX. With updated microcode the issue can still be mitigated by enabling the MDS mitigation as described in the workaround section, or by disabling TSX instead: 1. kldload cpuctl 2. cpucontrol -i 7 /dev/cpuctl0 If bit 29 (0x20000000) is set in the fourth response word (EDX), then the 0x10a MSR is present. cpucontrol -m 0x10a /dev/cpuctl0 If bit 8 (0x100) of the response word is set, your CPU is not vulnerable to TAA and no further action is required. If bit 7 (0x80) is cleared, then your CPU does not have updated microcode that facilitates TSX to be disabled. The only remedy available is to enable the MDS mitigation, as documented above. cpucontrol -m 0x122=3 /dev/cpuctl0 Repeat step 4 for each numbered CPU that is present. A future kernel change to FreeBSD will provide automatic detection and mitigation for TAA. LLVM 9.0 will be updated in FreeBSD 13-current to address the JCC peformance impact. Updates to prior versions of LLVM are currently being evaluated. VI. Correction details There are currently no changes in FreeBSD to address this issue. VII. 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. Relevant releases/architectures: RHV-M 4.2 - noarch 3. It includes the configuration of the Red Hat Support plugin, copying downstream-only artifacts to the ISO domain, and links to the knowledgebase and other support material. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Once all virtual machines have shut down, start them again for this update to take effect. This flaw could allow an attacker controlling an unprivileged process to read sensitive information, including from the kernel and all other processes running on the system or cross guest/host boundaries to read host memory. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details. An updated intel-microcode package (only available in Debian non-free) will be provided via a separate DSA. The updated CPU microcode may also be available as part of a system firmware ("BIOS") update. In addition, this update includes a fix for a regression causing deadlocks inside the loopback driver, which was introduced by the update to 4.9.168 in the last Stretch point release. For the stable distribution (stretch), these problems have been fixed in version 4.9.168-1+deb9u2. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux 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----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAlzbK/hfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0RDbhAAkCG4A3Yx+lAGMIgm9lXWeacyTFQ7RhS0NzQ+7rewiQZti4JphoEnuub1 sq9GH041twKbQQKJiuRD7AvKIzt8hfziQVBvIs+Nojp3fOHU9TIDqqENmfBYflkQ qvP/tP5vqXREMihV6zGAzK47lfIvEztAQYiZymD4zMzWF0QrY/9/uEQFgwgD5AaP xvreR+M2tsWQR3MZOAfWlTbX9nSbyV2K7nULs5y+g0ko8sbJDxNhfKO/6yauSiHK pq6I3Fg56PsNtse/r/II9jlGE9DYvC+cI9vRNEBZep9A0dmRqN8j3sk0jmNVfi/F Tm3jWFgtRtaa6ANMeBHIBQzkGjML6GbE68Iyf0+EGZ7ZrXSeAIi4InYFCNJA7w5/ K0Nu2nCMAaxVwYPAO7mvNxAnKgOPLE+e7fYNlqztpHOO/nXNmOG7zknqstlkS+Vc LfsjAiqtAGw6PubdXMSc5BVrdQQTmT3tvqg4BW2i3bWeaW43MyQRc1cizplVrNLt KKgC1qNLGIvSZLejDF5KXX8VT50UEa05QshRHWu9Ckkvid2hedzipZkTsN5tsRoc XuCtYsbZqawHmExfyryqtkhTc4pti2nvHPzcMpJtmXtdkkvxh3ZYXbTR0vsSwJHt rLY3ms+Sw/DT0kdXgEb1gz4prezXcINgPhGDiP/hbRaQnsP2x7U= =ukU9 -----END PGP SIGNATURE----- . These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

TYPE

information disclosure

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Daniel Genkin1,Ubuntu,InTeL, Kekai Hu and Rodrigo Branco. It was independently reported by Lei Shi - Qihoo - 360 CERT and by Marina Minkin1, Henrique Kawakami, Daniel Moghimi2, Michael Schwarz3, Daniel Gruss3, Moritz Lipp3, The vulnerability was publicly disclosed externally. ,Gentoo, Berk Sunar2, Frank Pie,Debian, Jo Van Bulck4,Ke Sun

SOURCES

LAST UPDATE DATE

2025-01-28T22:43:09.458000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE