-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: qemu-kvm security update Advisory ID: RHSA-2016:1585-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-1585.html Issue date: 2016-08-09 CVE Names: CVE-2016-5403 ===================================================================== 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 Moderate. 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: KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. The qemu-kvm packages provide the user-space component for running virtual machines using KVM. Security Fix(es): * Quick emulator(Qemu) built with the virtio framework is vulnerable to an unbounded memory allocation issue. It was found that a malicious guest user could submit more requests than the virtqueue size permits. Processing a request allocates a VirtQueueElement and therefore causes unbounded memory allocation on the host controlled by the guest. (CVE-2016-5403) Red Hat would like to thank hongzhenhao (Marvel Team) 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/): 1358359 - CVE-2016-5403 Qemu: virtio: unbounded memory allocation on host via guest leading to DoS 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm i386: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm i386: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.i686.rpm ppc64: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.ppc64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.ppc64.rpm x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: qemu-kvm-0.12.1.2-2.491.el6_8.3.src.rpm i386: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-img-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.491.el6_8.3.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.491.el6_8.3.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-2016-5403 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2016 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFXqhkSXlSAg2UNWIIRAqOkAJ0YtSnV0C8aD2OEUaAHi66xy1TcrwCeIzw9 Dvqq6D0lSIDbZVJGtceYH7Q= =HBe+ -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce