The is_rndis function in the USB Net device emulator (hw/usb/dev-network.c) in QEMU before 2.5.1 does not properly validate USB configuration descriptor objects, which allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors involving a remote NDIS control message packet.
Exploitability
AV:LAC:LPR:LUI:NScope
S:CImpact
C:NI:NA:H6.5/CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H