ID

VAR-201905-0709

CVE

CVE-2018-12126

TITLE

Multiple Intel Product Information Disclosure Vulnerabilities (CNVD-2019-22231)

DESCRIPTION

Microarchitectural Store Buffer Data Sampling (MSBDS): Store buffers 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. Description: The VDSM service is required by a Virtualization Manager to manage the Linux hosts. VDSM manages and monitors the host's storage, memory and networks as well as virtual machine creation, other host administration tasks, statistics gathering, and log collection. -----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. (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) 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) 4. -----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. 6.5) - x86_64 3. 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. These CVEs are security vulnerabilities caused by flaws in the design of speculative execution hardware in the computer's CPU. Details on the vulnerability and our response can be found here: https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/MDS Due to the high complexity of the fixes and the need for a corresponding CPU microcode update for a complete fix, we are unable to livepatch these CVEs. Please plan to reboot into an updated kernel as soon as possible. Users running Ubuntu 16.04 LTS or 14.04 LTS should upgrade to kernel version 4.4.0-148.174 or later. References: CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, and CVE-2019-11091 -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-08-15T02:45:11.430000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE