{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright © Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for rhev-hypervisor7 is now available for RHEV 3.X Hypervisor and Agents for Red Hat Enterprise Linux 6 and RHEV 3.X Hypervisor and Agents Extended Lifecycle Support for Red Hat Enterprise Linux 7.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "The rhev-hypervisor7 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent.\n\nSecurity Fix(es):\n\n* An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639, x86 AMD)\n\nRed Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2018:2246", "url": "https://access.redhat.com/errata/RHSA-2018:2246" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "https://access.redhat.com/security/vulnerabilities/ssbd", "url": "https://access.redhat.com/security/vulnerabilities/ssbd" }, { "category": "external", "summary": "1566890", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1566890" }, { "category": "external", "summary": "1600050", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1600050" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2018/rhsa-2018_2246.json" } ], "title": "Red Hat Security Advisory: rhev-hypervisor7 security update", "tracking": { "current_release_date": "2026-06-28T12:12:08+00:00", "generator": { "date": "2026-06-28T12:12:08+00:00", "engine": { "name": "Red Hat SDEngine", "version": "5.2.6" } }, "id": "RHSA-2018:2246", "initial_release_date": "2018-07-24T10:37:35+00:00", "revision_history": [ { "date": "2018-07-24T10:37:35+00:00", "number": "1", "summary": "Initial version" }, { "date": "2018-07-24T10:37:35+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2026-06-28T12:12:08+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "RHEV Hypervisor for RHEL-6 ELS", "product": { "name": "RHEV Hypervisor for RHEL-6 ELS", "product_id": "6Server-RHEV-Hypervisor-ELS", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:6::hypervisor" } } }, { "category": "product_name", "name": "RHEL 7-based RHEV-H ELS", "product": { "name": "RHEL 7-based RHEV-H ELS", "product_id": "7Server-RHEV-Hypervisor-ELS-7", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor" } } } ], "category": "product_family", "name": "Red Hat Virtualization" }, { "branches": [ { "category": "product_version", "name": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "product": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "product_id": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "product_identification_helper": { "purl": "pkg:rpm/redhat/rhev-hypervisor7@7.3-20180710.1.el6ev?arch=src" } } }, { "category": "product_version", "name": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.src", "product": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.src", "product_id": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.src", "product_identification_helper": { "purl": "pkg:rpm/redhat/rhev-hypervisor7@7.3-20180710.1.el7ev?arch=src" } } } ], "category": "architecture", "name": "src" }, { "branches": [ { "category": "product_version", "name": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "product": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "product_id": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "product_identification_helper": { "purl": "pkg:rpm/redhat/rhev-hypervisor7@7.3-20180710.1.el6ev?arch=noarch" } } }, { "category": "product_version", "name": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "product": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "product_id": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "product_identification_helper": { "purl": "pkg:rpm/redhat/rhev-hypervisor7@7.3-20180710.1.el7ev?arch=noarch" } } } ], "category": "architecture", "name": "noarch" } ], "category": "vendor", "name": "Red Hat" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch as a component of RHEV Hypervisor for RHEL-6 ELS", "product_id": "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch" }, "product_reference": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "relates_to_product_reference": "6Server-RHEV-Hypervisor-ELS" }, { "category": "default_component_of", "full_product_name": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.src as a component of RHEV Hypervisor for RHEL-6 ELS", "product_id": "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.src" }, "product_reference": "rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "relates_to_product_reference": "6Server-RHEV-Hypervisor-ELS" }, { "category": "default_component_of", "full_product_name": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch as a component of RHEL 7-based RHEV-H ELS", "product_id": "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch" }, "product_reference": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "relates_to_product_reference": "7Server-RHEV-Hypervisor-ELS-7" }, { "category": "default_component_of", "full_product_name": { "name": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.src as a component of RHEL 7-based RHEV-H ELS", "product_id": "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.src" }, "product_reference": "rhev-hypervisor7-0:7.3-20180710.1.el7ev.src", "relates_to_product_reference": "7Server-RHEV-Hypervisor-ELS-7" } ] }, "vulnerabilities": [ { "acknowledgments": [ { "names": [ "Jann Horn" ], "organization": "Google Project Zero" }, { "names": [ "Ken Johnson" ], "organization": "Microsoft Security Response Center" } ], "cve": "CVE-2018-3639", "cwe": { "id": "CWE-385", "name": "Covert Timing Channel" }, "discovery_date": "2018-03-12T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "1566890" } ], "notes": [ { "category": "description", "text": "An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks.", "title": "Vulnerability description" }, { "category": "summary", "text": "hw: cpu: speculative store bypass", "title": "Vulnerability summary" }, { "category": "other", "text": "Red Hat Product Security is aware of this issue. Updates will be released as they become available. For additional information, please refer to the Red Hat Knowledgebase article: https://access.redhat.com/security/vulnerabilities/ssbd", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.src" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2018-3639" }, { "category": "external", "summary": "RHBZ#1566890", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1566890" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2018-3639", "url": "https://www.cve.org/CVERecord?id=CVE-2018-3639" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2018-3639", "url": "https://nvd.nist.gov/vuln/detail/CVE-2018-3639" }, { "category": "external", "summary": "https://access.redhat.com/security/vulnerabilities/ssbd", "url": "https://access.redhat.com/security/vulnerabilities/ssbd" }, { "category": "external", "summary": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1528", "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1528" }, { "category": "external", "summary": "https://software.intel.com/sites/default/files/managed/b9/f9/336983-Intel-Analysis-of-Speculative-Execution-Side-Channels-White-Paper.pdf", "url": "https://software.intel.com/sites/default/files/managed/b9/f9/336983-Intel-Analysis-of-Speculative-Execution-Side-Channels-White-Paper.pdf" }, { "category": "external", "summary": "https://software.intel.com/sites/default/files/managed/c5/63/336996-Speculative-Execution-Side-Channel-Mitigations.pdf", "url": "https://software.intel.com/sites/default/files/managed/c5/63/336996-Speculative-Execution-Side-Channel-Mitigations.pdf" }, { "category": "external", "summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html", "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00115.html" } ], "release_date": "2018-05-21T21:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2018-07-24T10:37:35+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": [ "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.src" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2018:2246" } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N", "version": "3.0" }, "products": [ "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.noarch", "6Server-RHEV-Hypervisor-ELS:rhev-hypervisor7-0:7.3-20180710.1.el6ev.src", "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.noarch", "7Server-RHEV-Hypervisor-ELS-7:rhev-hypervisor7-0:7.3-20180710.1.el7ev.src" ] } ], "threats": [ { "category": "impact", "details": "Important" } ], "title": "hw: cpu: speculative store bypass" } ] }