Mandriva Linux Security Advisory 2013-138 - 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.
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Ubuntu Security Notice 1714-1 - It was discovered that the QXL graphics driver incorrectly handled terminated connections. An attacker that could connect to a guest using SPICE and the QXL graphics driver could cause the guest to hang or crash, resulting in a denial of service.
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Red Hat Security Advisory 2013-0218-01 - 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, crash the guest.
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