The virtqueuemapdesc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "2.6.2"
},
{
"introduced": "0"
},
{
"last_affected": "2.7.0-rc0"
}
]
}