-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:1661-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1661 Issue date: 2018-05-21 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server AUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.2) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.2) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.2) - 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. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue. 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 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.2): Source: qemu-kvm-1.5.3-105.el7_2.17.src.rpm x86_64: libcacard-1.5.3-105.el7_2.17.i686.rpm libcacard-1.5.3-105.el7_2.17.x86_64.rpm qemu-img-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-common-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.i686.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-tools-1.5.3-105.el7_2.17.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.2): Source: qemu-kvm-1.5.3-105.el7_2.17.src.rpm ppc64le: qemu-img-1.5.3-105.el7_2.17.ppc64le.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.ppc64le.rpm x86_64: libcacard-1.5.3-105.el7_2.17.i686.rpm libcacard-1.5.3-105.el7_2.17.x86_64.rpm qemu-img-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-common-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.i686.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-tools-1.5.3-105.el7_2.17.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.2): Source: qemu-kvm-1.5.3-105.el7_2.17.src.rpm x86_64: libcacard-1.5.3-105.el7_2.17.i686.rpm libcacard-1.5.3-105.el7_2.17.x86_64.rpm qemu-img-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-common-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.i686.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-tools-1.5.3-105.el7_2.17.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.2): x86_64: libcacard-devel-1.5.3-105.el7_2.17.i686.rpm libcacard-devel-1.5.3-105.el7_2.17.x86_64.rpm libcacard-tools-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.i686.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.2): ppc64le: libcacard-1.5.3-105.el7_2.17.ppc64le.rpm libcacard-devel-1.5.3-105.el7_2.17.ppc64le.rpm libcacard-tools-1.5.3-105.el7_2.17.ppc64le.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.ppc64le.rpm x86_64: libcacard-devel-1.5.3-105.el7_2.17.i686.rpm libcacard-devel-1.5.3-105.el7_2.17.x86_64.rpm libcacard-tools-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.i686.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.2): x86_64: libcacard-devel-1.5.3-105.el7_2.17.i686.rpm libcacard-devel-1.5.3-105.el7_2.17.x86_64.rpm libcacard-tools-1.5.3-105.el7_2.17.x86_64.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.i686.rpm qemu-kvm-debuginfo-1.5.3-105.el7_2.17.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 iQIVAwUBWwQqMtzjgjWX9erEAQhz4g/+P5UH4oBk7Oxv6k6Yxa+lf5ZMrSvFe+9U W4bch6nEWTAV6fMTfybfRgVDGF8WWyqaCNC3gjqA+xAveTo81IRHtyOT2I2+Zr45 +t/niCIORdASGV1thP1/DefctpyWN1oTYpxGPeNWfhfA4hCl/v6GGFOo9tst5hJ6 bB2aXDQmRHYhea4y2y4XHGoYI38CpnuC/eDUyDf4f5JwNCNcuZhdiXRWvvZlsVvT gqq6fVKOIfg4sA2qxKEG11svg8bk9SmIi53D5fIH+2AWY4sFazItdKDCap6PzUmP 1MwqfgaD2TgBP56PFAtQemimgmvARTHbkwR3qAg6xfYbyoWYBJhI88SmMUL7qGO/ dQ5wYA/9GwyCMB/OhIO9qMyKGzSFfEF/v7+4H0QPjv2JRE21qvq+tpBLh5KVAcmO OglxEmUSSjuUOBakyvMTpVmGOUofCbu7xYmmA19ZDzqu+HhXvxQ6j5Q62kShD4Sb DlRborQvocRHdKf1ru7cKolmJ8VCQjdTbVeTIAvZzQ3rMwBRhQ483zAw/MSMDHI8 pAJOM34fMtqub7jxNe1NDIRxuXEmbaJFBY7PYnIYhcRK+J7vdkYSyo9H4DXuWFik 875z/O5MpLXZ9PO6vOnweiUmJ+bhJGZ4hcRuhPwWag18a8yGjM7XNsNt1Pn8qW0O NvFUoTSfELw= =E6y6 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce