VAR-201905-1248
Vulnerability from variot - Updated: 2025-12-22 21:29Microarchitectural 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. 7.4) - ppc64, ppc64le, x86_64
- 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Important: libvirt security update Advisory ID: RHSA-2019:1187-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:1187 Issue date: 2019-05-14 CVE Names: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 =====================================================================
- Summary:
An update for libvirt is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended Update Support, and Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions.
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.
- Relevant releases/architectures:
Red Hat Enterprise Linux Server AUS (v. 7.3) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.3) - ppc64le Red Hat Enterprise Linux Server TUS (v. 7.3) - x86_64
- 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.
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.
- 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
After installing the updated packages, libvirtd will be restarted automatically.
- 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)
- Package List:
Red Hat Enterprise Linux Server AUS (v. 7.3):
Source: libvirt-2.0.0-10.el7_3.14.src.rpm
x86_64: libvirt-2.0.0-10.el7_3.14.x86_64.rpm libvirt-client-2.0.0-10.el7_3.14.i686.rpm libvirt-client-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-config-network-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-config-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-interface-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-lxc-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-network-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-nodedev-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-qemu-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-secret-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-storage-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-kvm-2.0.0-10.el7_3.14.x86_64.rpm libvirt-debuginfo-2.0.0-10.el7_3.14.i686.rpm libvirt-debuginfo-2.0.0-10.el7_3.14.x86_64.rpm libvirt-devel-2.0.0-10.el7_3.14.i686.rpm libvirt-devel-2.0.0-10.el7_3.14.x86_64.rpm libvirt-docs-2.0.0-10.el7_3.14.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.3):
Source: libvirt-2.0.0-10.el7_3.14.src.rpm
ppc64le: libvirt-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-client-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-config-network-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-config-nwfilter-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-interface-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-lxc-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-network-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-nodedev-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-qemu-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-secret-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-daemon-driver-storage-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-debuginfo-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-devel-2.0.0-10.el7_3.14.ppc64le.rpm libvirt-docs-2.0.0-10.el7_3.14.ppc64le.rpm
Red Hat Enterprise Linux Server TUS (v. 7.3):
Source: libvirt-2.0.0-10.el7_3.14.src.rpm
x86_64: libvirt-2.0.0-10.el7_3.14.x86_64.rpm libvirt-client-2.0.0-10.el7_3.14.i686.rpm libvirt-client-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-config-network-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-config-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-interface-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-lxc-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-network-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-nodedev-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-qemu-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-secret-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-driver-storage-2.0.0-10.el7_3.14.x86_64.rpm libvirt-daemon-kvm-2.0.0-10.el7_3.14.x86_64.rpm libvirt-debuginfo-2.0.0-10.el7_3.14.i686.rpm libvirt-debuginfo-2.0.0-10.el7_3.14.x86_64.rpm libvirt-devel-2.0.0-10.el7_3.14.i686.rpm libvirt-devel-2.0.0-10.el7_3.14.x86_64.rpm libvirt-docs-2.0.0-10.el7_3.14.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/
- 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/vulnerabilities/mds https://access.redhat.com/security/updates/classification/#important
- 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
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . (CVE-2019-11091)
- Relevant releases/architectures:
RHV-M 4.3 - noarch
- 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.
This update provides additional support for some Sandybridge server and Core-X CPUs which were not covered in the original May microcode release. Description:
The kernel packages contain the Linux kernel, the core of any Linux operating system. ========================================================================== 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. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512
Debian Security Advisory DSA-4444-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso May 14, 2019 https://www.debian.org/security/faq
Package : linux CVE ID : CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091 Debian Bug : 928125
Multiple researchers have discovered vulnerabilities in the way the Intel processor designs have implemented speculative forwarding of data filled into temporary microarchitectural structures (buffers). 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.
To fully resolve these vulnerabilities it is also necessary to install updated CPU microcode. 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-----
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"data": "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. \nThe 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. \nProof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. A third-party patch is also available. 7.4) - ppc64, ppc64le, x86_64\n\n3. Description:\n\nKernel-based Virtual Machine (KVM) is a full virtualization solution for\nLinux on a variety of architectures. The qemu-kvm packages provide the\nuser-space component for running virtual machines that use KVM. Once\nall virtual machines have shut down, start them again for this update to\ntake effect. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Important: libvirt security update\nAdvisory ID: RHSA-2019:1187-01\nProduct: Red Hat Enterprise Linux\nAdvisory URL: https://access.redhat.com/errata/RHSA-2019:1187\nIssue date: 2019-05-14\nCVE Names: CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 \n CVE-2019-11091 \n=====================================================================\n\n1. Summary:\n\nAn update for libvirt is now available for Red Hat Enterprise Linux 7.3\nAdvanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended Update\nSupport, and Red Hat Enterprise Linux 7.3 Update Services for SAP\nSolutions. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Server AUS (v. 7.3) - x86_64\nRed Hat Enterprise Linux Server E4S (v. 7.3) - ppc64le\nRed Hat Enterprise Linux Server TUS (v. 7.3) - x86_64\n\n3. Description:\n\nThe libvirt library contains a C API for managing and interacting with the\nvirtualization capabilities of Linux and other operating systems. In\naddition, libvirt provides tools for remote management of virtualized\nsystems. \n\nSecurity Fix(es):\n\n* A flaw was found in the implementation of the \"fill buffer\", a mechanism\nused by modern CPUs when a cache-miss is made on L1 CPU cache. If an\nattacker can generate a load operation that would create a page fault, the\nexecution will continue speculatively with incorrect data from the fill\nbuffer while the data is fetched from higher level caches. This response\ntime can be measured to infer data in the fill buffer. (CVE-2018-12130)\n\n* Modern Intel microprocessors implement hardware-level micro-optimizations\nto improve the performance of writing data back to CPU caches. The write\noperation is split into STA (STore Address) and STD (STore Data)\nsub-operations. These sub-operations allow the processor to hand-off\naddress generation logic into these sub-operations for optimized writes. \nBoth of these sub-operations write to a shared distributed processor\nstructure called the \u0027processor store buffer\u0027. As a result, an unprivileged\nattacker could use this flaw to read private data resident within the CPU\u0027s\nprocessor store buffer. (CVE-2018-12126)\n\n* Microprocessors use a \u2018load port\u2019 subcomponent to perform load operations\nfrom memory or IO. During a load operation, the load port receives data\nfrom the memory or IO subsystem and then provides the data to the CPU\nregisters and operations in the CPU\u2019s pipelines. Stale load operations\nresults are stored in the \u0027load port\u0027 table until overwritten by newer\noperations. Certain load-port operations triggered by an attacker can be\nused to reveal data about previous stale requests leaking data back to the\nattacker via a timing side-channel. (CVE-2019-11091)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section. \n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing the updated packages, libvirtd will be restarted\nautomatically. \n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n1646781 - CVE-2018-12126 hardware: Microarchitectural Store Buffer Data Sampling (MSBDS)\n1646784 - CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS)\n1667782 - CVE-2018-12127 hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS)\n1705312 - CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)\n\n6. Package List:\n\nRed Hat Enterprise Linux Server AUS (v. 7.3):\n\nSource:\nlibvirt-2.0.0-10.el7_3.14.src.rpm\n\nx86_64:\nlibvirt-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-client-2.0.0-10.el7_3.14.i686.rpm\nlibvirt-client-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-config-network-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-config-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-interface-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-lxc-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-network-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-nodedev-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-qemu-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-secret-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-storage-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-kvm-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-debuginfo-2.0.0-10.el7_3.14.i686.rpm\nlibvirt-debuginfo-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-devel-2.0.0-10.el7_3.14.i686.rpm\nlibvirt-devel-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-docs-2.0.0-10.el7_3.14.x86_64.rpm\n\nRed Hat Enterprise Linux Server E4S (v. 7.3):\n\nSource:\nlibvirt-2.0.0-10.el7_3.14.src.rpm\n\nppc64le:\nlibvirt-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-client-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-config-network-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-config-nwfilter-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-interface-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-lxc-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-network-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-nodedev-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-qemu-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-secret-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-daemon-driver-storage-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-debuginfo-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-devel-2.0.0-10.el7_3.14.ppc64le.rpm\nlibvirt-docs-2.0.0-10.el7_3.14.ppc64le.rpm\n\nRed Hat Enterprise Linux Server TUS (v. 7.3):\n\nSource:\nlibvirt-2.0.0-10.el7_3.14.src.rpm\n\nx86_64:\nlibvirt-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-client-2.0.0-10.el7_3.14.i686.rpm\nlibvirt-client-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-config-network-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-config-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-interface-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-lxc-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-network-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-nodedev-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-nwfilter-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-qemu-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-secret-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-driver-storage-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-daemon-kvm-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-debuginfo-2.0.0-10.el7_3.14.i686.rpm\nlibvirt-debuginfo-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-devel-2.0.0-10.el7_3.14.i686.rpm\nlibvirt-devel-2.0.0-10.el7_3.14.x86_64.rpm\nlibvirt-docs-2.0.0-10.el7_3.14.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2018-12126\nhttps://access.redhat.com/security/cve/CVE-2018-12127\nhttps://access.redhat.com/security/cve/CVE-2018-12130\nhttps://access.redhat.com/security/cve/CVE-2019-11091\nhttps://access.redhat.com/security/vulnerabilities/mds\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2019 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n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\n8vrBygs/y9E=\n=riLf\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. (CVE-2019-11091)\n\n4. Relevant releases/architectures:\n\nRHV-M 4.3 - noarch\n\n3. \nIt includes the configuration of the Red Hat Support plugin, copying\ndownstream-only artifacts to the ISO domain, and links to the knowledgebase\nand other support material. \n\nThis update provides additional support for some Sandybridge server\nand Core-X CPUs which were not covered in the original May microcode\nrelease. Description:\n\nThe kernel packages contain the Linux kernel, the core of any Linux\noperating system. ==========================================================================\nUbuntu Security Notice USN-3981-1\nMay 14, 2019\n\nlinux, linux-aws, linux-gcp, linux-kvm, linux-oem, linux-oracle,\nlinux-raspi2, linux-snapdragon vulnerabilities\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 18.04 LTS\n\nSummary:\n\nSeveral security issues were fixed in the Linux kernel. \n\nSoftware Description:\n- linux: Linux kernel\n- linux-aws: Linux kernel for Amazon Web Services (AWS) systems\n- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems\n- linux-kvm: Linux kernel for cloud environments\n- linux-oem: Linux kernel for OEM processors\n- linux-oracle: Linux kernel for Oracle Cloud systems\n- linux-raspi2: Linux kernel for Raspberry Pi 2\n- linux-snapdragon: Linux kernel for Snapdragon processors\n\nDetails:\n\nKe Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Giorgi Maisuradze, Dan\nHorea Lutas, Andrei Lutas, Volodymyr Pikhur, Stephan van Schaik, Alyssa\nMilburn, Sebastian \\xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos,\nCristiano Giuffrida, Moritz Lipp, Michael Schwarz, and Daniel Gruss\ndiscovered that memory previously stored in microarchitectural fill buffers\nof an Intel CPU core may be exposed to a malicious process that is\nexecuting on the same CPU core. (CVE-2018-12130)\n\nBrandon Falk, Ke Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Stephan\nvan Schaik, Alyssa Milburn, Sebastian \\xd6sterlund, Pietro Frigo, Kaveh\nRazavi, Herbert Bos, and Cristiano Giuffrida discovered that memory\npreviously stored in microarchitectural load ports of an Intel CPU core may\nbe exposed to a malicious process that is executing on the same CPU core. \n(CVE-2018-12127)\n\nKe Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Marina Minkin, Daniel\nMoghimi, Moritz Lipp, Michael Schwarz, Jo Van Bulck, Daniel Genkin, Daniel\nGruss, Berk Sunar, Frank Piessens, and Yuval Yarom discovered that memory\npreviously stored in microarchitectural store buffers of an Intel CPU core\nmay be exposed to a malicious process that is executing on the same CPU\ncore. \n(CVE-2018-12126)\n\nVasily Averin and Evgenii Shatokhin discovered that a use-after-free\nvulnerability existed in the NFS41+ subsystem when multiple network\nnamespaces are in use. A local attacker in a container could use this to\ncause a denial of service (system crash) or possibly execute arbitrary\ncode. (CVE-2018-16884)\n\nKe Sun, Henrique Kawakami, Kekai Hu, Rodrigo Branco, Volodrmyr Pikhur,\nMoritz Lipp, Michael Schwarz, Daniel Gruss, Stephan van Schaik, Alyssa\nMilburn, Sebastian \\xd6sterlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, and\nCristiano Giuffrida discovered that uncacheable memory previously stored in\nmicroarchitectural buffers of an Intel CPU core may be exposed to a\nmalicious process that is executing on the same CPU core. (CVE-2019-11091)\n\nMatteo Croce, Natale Vinto, and Andrea Spagnolo discovered that the cgroups\nsubsystem of the Linux kernel did not properly account for SCTP socket\nbuffers. A local attacker could use this to cause a denial of service\n(system crash). (CVE-2019-3874)\n\nAlex Williamson discovered that the vfio subsystem of the Linux kernel did\nnot properly limit DMA mappings. A local attacker could use this to cause a\ndenial of service (memory exhaustion). (CVE-2019-3882)\n\nHugues Anguelkov discovered that the Broadcom Wifi driver in the Linux\nkernel contained a heap buffer overflow. A physically proximate attacker\ncould use this to cause a denial of service (system crash) or possibly\nexecute arbitrary code. (CVE-2019-9500)\n\nHugues Anguelkov discovered that the Broadcom Wifi driver in the Linux\nkernel did not properly prevent remote firmware events from being processed\nfor USB Wifi devices. A physically proximate attacker could use this to\nsend firmware events to the device. (CVE-2019-9503)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 18.04 LTS:\n linux-image-4.15.0-1013-oracle 4.15.0-1013.15\n linux-image-4.15.0-1032-gcp 4.15.0-1032.34\n linux-image-4.15.0-1034-kvm 4.15.0-1034.34\n linux-image-4.15.0-1036-raspi2 4.15.0-1036.38\n linux-image-4.15.0-1038-oem 4.15.0-1038.43\n linux-image-4.15.0-1039-aws 4.15.0-1039.41\n linux-image-4.15.0-1053-snapdragon 4.15.0-1053.57\n linux-image-4.15.0-50-generic 4.15.0-50.54\n linux-image-4.15.0-50-generic-lpae 4.15.0-50.54\n linux-image-4.15.0-50-lowlatency 4.15.0-50.54\n linux-image-4.15.0-50-snapdragon 4.15.0-50.54\n linux-image-aws 4.15.0.1039.38\n linux-image-gcp 4.15.0.1032.34\n linux-image-generic 4.15.0.50.52\n linux-image-generic-lpae 4.15.0.50.52\n linux-image-kvm 4.15.0.1034.34\n linux-image-lowlatency 4.15.0.50.52\n linux-image-oem 4.15.0.1038.43\n linux-image-oracle 4.15.0.1013.16\n linux-image-powerpc-e500mc 4.15.0.50.52\n linux-image-powerpc-smp 4.15.0.50.52\n linux-image-powerpc64-emb 4.15.0.50.52\n linux-image-powerpc64-smp 4.15.0.50.52\n linux-image-raspi2 4.15.0.1036.34\n linux-image-snapdragon 4.15.0.1053.56\n linux-image-virtual 4.15.0.50.52\n\nAfter a standard system update you need to reboot your computer to make\nall the necessary changes. \n\nPlease note that fully mitigating the Microarchitectural Data Sampling\n(MDS) issues (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, and\nCVE-2019-11091) requires corresponding processor microcode/firmware\nupdates or, in virtual environments, hypervisor updates. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA512\n\n- -------------------------------------------------------------------------\nDebian Security Advisory DSA-4444-1 security@debian.org\nhttps://www.debian.org/security/ Salvatore Bonaccorso\nMay 14, 2019 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : linux\nCVE ID : CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2019-11091\nDebian Bug : 928125\n\nMultiple researchers have discovered vulnerabilities in the way the\nIntel processor designs have implemented speculative forwarding of data\nfilled into temporary microarchitectural structures (buffers). This\nflaw could allow an attacker controlling an unprivileged process to\nread sensitive information, including from the kernel and all other\nprocesses running on the system or cross guest/host boundaries to read\nhost memory. \n\nSee https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html\nfor more details. \n\nTo fully resolve these vulnerabilities it is also necessary to install\nupdated CPU microcode. An updated intel-microcode package (only\navailable in Debian non-free) will be provided via a separate DSA. The\nupdated CPU microcode may also be available as part of a system firmware\n(\"BIOS\") update. \n\nIn addition, this update includes a fix for a regression causing\ndeadlocks inside the loopback driver, which was introduced by the update\nto 4.9.168 in the last Stretch point release. \n\nFor the stable distribution (stretch), these problems have been fixed in\nversion 4.9.168-1+deb9u2. \n\nFor the detailed security status of linux please refer to its security\ntracker page at:\nhttps://security-tracker.debian.org/tracker/linux\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org\n-----BEGIN PGP SIGNATURE-----\n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\nrLY3ms+Sw/DT0kdXgEb1gz4prezXcINgPhGDiP/hbRaQnsP2x7U=\n=ukU9\n-----END PGP SIGNATURE-----\n",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.