-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:2162-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:2162 Issue date: 2018-07-10 CVE Names: CVE-2017-13672 CVE-2018-3639 CVE-2018-5683 CVE-2018-7858 ==================================================================== 1. Summary: An update for qemu-kvm 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, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, 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. 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) Note: This is the qemu-kvm side of the CVE-2018-3639 mitigation. * QEMU: cirrus: OOB access when updating VGA display (CVE-2018-7858) * QEMU: vga: OOB read access during display update (CVE-2017-13672) * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting CVE-2018-3639; Ross Lagerwall (Citrix.com) for reporting CVE-2018-7858; David Buchanan for reporting CVE-2017-13672; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. 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/): 1486560 - CVE-2017-13672 QEMU: vga: OOB read access during display update 1530356 - CVE-2018-5683 Qemu: Out-of-bounds read in vga_draw_text routine 1553402 - CVE-2018-7858 QEMU: cirrus: OOB access when updating VGA display 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: qemu-kvm-0.12.1.2-2.506.el6_10.1.src.rpm i386: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.506.el6_10.1.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: qemu-kvm-0.12.1.2-2.506.el6_10.1.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.506.el6_10.1.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: qemu-kvm-0.12.1.2-2.506.el6_10.1.src.rpm i386: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.i686.rpm ppc64: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.ppc64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.ppc64.rpm x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.506.el6_10.1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: qemu-kvm-0.12.1.2-2.506.el6_10.1.src.rpm i386: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-img-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.1.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.506.el6_10.1.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-2017-13672 https://access.redhat.com/security/cve/CVE-2018-3639 https://access.redhat.com/security/cve/CVE-2018-5683 https://access.redhat.com/security/cve/CVE-2018-7858 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 iQIVAwUBW0TyhdzjgjWX9erEAQiGSg/+J9N8XQ6MW6sQRapotRjk8yyYLtatWC31 AvPZ2brDzQYmAfDFKFsITO5J/tW+VZITdotkNFImtYW/hj8x9WtuHi5UGuh8K1Eu Rx0tgk0kqUH3H7vtlTo5/0rOtuBzyundXZgAktG5EZuA3Nb9kxOmNLXsHzuRikEV KPC9Rwx+0Hh9U/0kJYEbOgvuBmah9lVnu0WCLgk+Yo4ksySB1DScfPVK2ihmPZlY FCt6P7qXgVYbqrlgX1Zh2xgLIh041k3nxGuWxWm1iQytXiK5jhQqj492Bz7tHTRo 5B5t+r8fRfE7iJjXbheCLrRGAyJA8VCTgiqiGaAkgqP0uW6MSf8qE0fDkB+Nfizp dG0PLXT11gw8JsrE56k7tfUYqGgHEenlTO4/YdllXHObyMRJXsKSqQSZ1essxOjt ehw/waHIaRzbqxt4aBIpnxxp9SrmpZkeTHdbvRYjr41b4xKGxy3dPrAdgxfNjocr +lkXNxjJE/mti84G2IClddtopehHmej8LIII9PjrTbsMaEk1YVlE3B0E/XsYDh9q teylYBwCopv7eifTzIrKs9Eimr6F6nvC92iChtoThHXZfRv0yzFucXTudsJczF6z L2P8OQfK1m+gS9OgOtkInnOllNxr35k3rNKwwMoSxeuG2eY7Mmw/PE+VPGEF6Ruu ntCRT5igD/A=r8ae -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce