CVE-2016-9922

La función cirrus_do_copy en hw/display/cirrus_vga.c en QEMU (también conocido como Quick Emulator), cuando el modo de gráficos cirrus es VGA, permite a usuarios locales privilegiados del SO invitado provocar una denegación de servicio (error de división por cero y caída del proceso QEMU) a través de vectores que implican valores de tono blit.

KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. The following packages have been upgraded to a later upstream version: qemu-kvm-rhev. Security Fix: A stack buffer overflow flaw was found in the Quick Emulator built with the Network Block Device client support. The flaw could occur while processing server's response to a 'NBD_OPT_LIST' request. A malicious NBD server could use this issue to crash a remote NBD client resulting in DoS or potentially execute arbitrary code on client host with privileges of the QEMU process.