CVE-2017-5898

Desbordamiento de entero en la función emulated_apdu_from_guest en usb/dev-smartcard-reader.c en Quick Emulator (Qemu), cuando se construye con el soporte de emulador de dispositivo de CCID Card, permite a usuarios locales provocar una denegación de servicio (caída de aplicación) a través de una unidad Unidad de datos de protocolo (APDU) grande.

An integer overflow flaw was found in Quick Emulator (QEMU) in the CCID Card device support. The flaw could occur while passing messages via command/response packets to and from the host. A privileged user inside a guest could use this flaw to crash the QEMU process.

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.