-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security and bug fix update Advisory ID: RHSA-2015:0867-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0867.html Issue date: 2015-04-21 CVE Names: CVE-2014-8106 ===================================================================== 1. Summary: An updated qemu-kvm package that fixes one security issue and one bug is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link 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, 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 package provides the user-space component for running virtual machines using KVM. It was found that the Cirrus blit region checks were insufficient. A privileged guest user could use this flaw to write outside of VRAM- allocated buffer boundaries in the host's QEMU process address space with attacker-provided data. (CVE-2014-8106) This issue was found by Paolo Bonzini of Red Hat. This update also fixes the following bug: * Previously, the effective downtime during the last phase of a live migration would sometimes be much higher than the maximum downtime specified by 'migration_downtime' in vdsm.conf. This problem has been corrected. The value of 'migration_downtime' is now honored and the migration is aborted if the downtime cannot be achieved. (BZ#1142756) All qemu-kvm users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. 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. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1169454 - CVE-2014-8106 qemu: cirrus: insufficient blit region checks 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: qemu-kvm-0.12.1.2-2.448.el6_6.2.src.rpm i386: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-img-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.448.el6_6.2.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: qemu-kvm-0.12.1.2-2.448.el6_6.2.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-img-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.448.el6_6.2.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: qemu-kvm-0.12.1.2-2.448.el6_6.2.src.rpm i386: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-img-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.448.el6_6.2.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: qemu-kvm-0.12.1.2-2.448.el6_6.2.src.rpm i386: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.i686.rpm x86_64: qemu-guest-agent-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-img-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.2.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.448.el6_6.2.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-2014-8106 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVNpCuXlSAg2UNWIIRAu48AJ9pGqqKAcPkJbR0I9gWuGTAMgA9BgCfRZHi 5PXON+GVi9Exw7oZErspaOM= =JzKU -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce