-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm-rhev security and bug fix update Advisory ID: RHSA-2018:2060-01 Product: Red Hat Virtualization Advisory URL: https://access.redhat.com/errata/RHSA-2018:2060 Issue date: 2018-06-27 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - ppc64le, x86_64 3. Description: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix(es): * 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) Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue. Note: This is the qemu-kvm-rhev side of the CVE-2018-3639 mitigation that includes support for guests running on hosts with AMD processors. Bug Fix(es): * Previously, using device passthrough for a SCSI-2 device failed and returned an "Illegal Request" error. With this update, the QEMU emulator checks the SCSI version of the device when performing passthrough. As a result, the described problem no longer occurs. (BZ#1571370) * Under certain circumstances, resuming a paused guest generated redundant "VIR_DOMAIN_PAUSED_UNKNOWN" error messages in the libvirt log. This update corrects the event sending order when resuming guests, which prevents the errors being logged. (BZ#1582122) Enhancement(s): * With this update, Ceph storage is supported by KVM virtualization on all CPU architectures supported by Red Hat. (BZ#1588001) 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 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 1582122 - IOERROR pause code lost after resuming a VM while I/O error is still present [rhel-7.5.z] 1588001 - Enable Native Ceph support on non x86_64 CPUs [rhel-7.5.z] 6. Package List: Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts: Source: qemu-kvm-rhev-2.10.0-21.el7_5.4.src.rpm ppc64le: qemu-img-rhev-2.10.0-21.el7_5.4.ppc64le.rpm qemu-kvm-common-rhev-2.10.0-21.el7_5.4.ppc64le.rpm qemu-kvm-rhev-2.10.0-21.el7_5.4.ppc64le.rpm qemu-kvm-rhev-debuginfo-2.10.0-21.el7_5.4.ppc64le.rpm qemu-kvm-tools-rhev-2.10.0-21.el7_5.4.ppc64le.rpm x86_64: qemu-img-rhev-2.10.0-21.el7_5.4.x86_64.rpm qemu-kvm-common-rhev-2.10.0-21.el7_5.4.x86_64.rpm qemu-kvm-rhev-2.10.0-21.el7_5.4.x86_64.rpm qemu-kvm-rhev-debuginfo-2.10.0-21.el7_5.4.x86_64.rpm qemu-kvm-tools-rhev-2.10.0-21.el7_5.4.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-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBWzNJ5NzjgjWX9erEAQjrDxAAgl9TDLczqj3gNufo9hUa9Q2joO0trbYu CqODofeadYq5zSzdi5dKpDfrQKXTdmZHGTk1pkL+BtkCA/cT6ehL2FabAUjUj3kX OcLgaDakYdKJ9kmBy2tZcDj5Jy71l5pCCSoGlHxJmOET3i8+oRMvVjl/22M8kjcV ImdirdJJGUr4M08JgzfafCf/46Lzns1SZZUoPS3CSTqOyQ4r6xDM6Q4yIHmnKZ1C X2JDXYgUun858XjzRyWhQdqjm/N4d3a2v29rbA1DjVUcWyAfuMwjYpDhBa4lnK3T 977Bj7AyDLAv3MzWe6fSMqovpwOIEgYHCLPNRPqaxd5q8jtS70h0rTnBZkKH18iO qJGfuIb9Jn6bG7mNj3c8DjiGdUknFlkrzNRLgv4nwffgxxRksWnIptKtj9flahlr g5fgKk342a/5yj+LFmiUQzhg8Xcg73SBFY06TIaGxvmzfdFXHmmQIfFNLxasUvtG QDEQ1mYqSrlqSN4dbkdsG7sZtpPtZDfhauQ4lot4+cEVZFjy+kcT8BGwB+REyivl dor+BVUcjqs9EnumWX5Q1UQtJO3r29MLmgflLalOaTsYe/apCu2DP/cKmXdPbsQV 6CRg9xsYRqqXhZ7/LhIeHVhrdQpSjekrb2+sjVhGC7Sy7jtQtuHcS0kG0Xb+eOWl /YDdPzlYngY= =PDKP -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce