Integer overflow in the emulated_apdu_from_guest function in usb/dev-smartcard-reader.c in Quick Emulator (Qemu), when built with the CCID Card device emulator support, allows local users to cause a denial of service (application crash) via a large Application Protocol Data Units (APDU) unit.
http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00045.html
http://lists.opensuse.org/opensuse-security-announce/2017-02/msg00048.html
https://access.redhat.com/errata/RHSA-2017:1856
https://access.redhat.com/errata/RHSA-2017:2392
https://bugzilla.redhat.com/show_bug.cgi?id=1419699