Red Hat Security Advisory: xorg-x11-drv-qxl security update Security Advisory secalert@redhat.com Red Hat Security Response Team RHSA-2013:0218 Final 1 1 2013-01-31T19:15:00Z Current version 2013-01-31T19:15:00Z 2013-01-31T19:15:00Z Red Hat rhsa-to-cvrf 1.0.1484 2013-01-31T19:31:02Z An updated xorg-x11-drv-qxl package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate 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. The xorg-x11-drv-qxl package provides an X11 video driver for the QEMU QXL video accelerator. This driver makes it possible to use Red Hat Enterprise Linux 6 as a guest operating system under the KVM kernel module and the QEMU multi-platform emulator, using the SPICE protocol. A flaw was found in the way the host's qemu-kvm qxl driver and the guest's X.Org qxl driver interacted when a SPICE connection terminated. A user able to initiate a SPICE connection to a guest could use this flaw to make the guest temporarily unavailable or, potentially (if the sysctl kernel.softlockup_panic variable was set to "1" in the guest), crash the guest. (CVE-2013-0241) All users of xorg-x11-drv-qxl are advised to upgrade to this updated package, which contains a backported patch to correct this issue. All running X.Org server instances using the qxl driver must be restarted for this update to take effect. Please see https://www.redhat.com/footer/terms-of-use.html Copyright © 2013 Red Hat, Inc. All rights reserved. Moderate https://rhn.redhat.com/errata/RHSA-2013-0218.html https://rhn.redhat.com/errata/RHSA-2013-0218.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/updates/classification/#moderate Red Hat Enterprise Linux Server (v. 6) Red Hat Enterprise Linux Workstation (v. 6) Red Hat Enterprise Linux Desktop (v. 6) xorg-x11-drv-qxl-0.0.14-14.el6_3.src.rpm xorg-x11-drv-qxl-0.0.14-14.el6_3 as a component of Red Hat Enterprise Linux Server (v. 6) xorg-x11-drv-qxl-0.0.14-14.el6_3 as a component of Red Hat Enterprise Linux Workstation (v. 6) xorg-x11-drv-qxl-0.0.14-14.el6_3 as a component of Red Hat Enterprise Linux Desktop (v. 6) A flaw was found in the way the host's qemu-kvm qxl driver and the guest's X.Org qxl driver interacted when a SPICE connection terminated. A user able to initiate a SPICE connection to a guest could use this flaw to make the guest temporarily unavailable or, potentially (if the sysctl kernel.softlockup_panic variable was set to "1" in the guest), crash the guest. 2012-10-29T00:00:00Z 2011-08-03T00:00:00Z CVE-2013-0241 6Client-6.3.z:xorg-x11-drv-qxl-0.0.14-14.el6_3 6Server-6.3.z:xorg-x11-drv-qxl-0.0.14-14.el6_3 6Workstation-6.3.z:xorg-x11-drv-qxl-0.0.14-14.el6_3 Moderate 4.6 AV:A/AC:H/Au:N/C:N/I:N/A:C Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258 https://rhn.redhat.com/errata/RHSA-2013-0218.html https://www.redhat.com/security/data/cve/CVE-2013-0241.html CVE-2013-0241 https://bugzilla.redhat.com/show_bug.cgi?id=906032 bz#906032: CVE-2013-0241 qxl: synchronous io guest DoS