cvp Incorrect Bailout Use-After-Free

In the function msmcvpmapbufwncc reachable from the EVAKMDREGISTERBUFFER ioctl, after cbuf is created and fully initialized, it is unconditionally added to the linked list inst-cvpwnccbufs.list. msmcvpmapbufwncc then tries to add an entry for the buffer to inst-cvpwnccbufstable. This can fail if...