[PATCH] USB: Gadget RNDIS fix alloc bug. (buffer overflow)

Remote NDIS response to OID_GEN_SUPPORTED_LIST only allocated space
for the data attached to the reply, and not the reply structure
itself. This caused other kmalloc'd memory to be corrupted.
Signed-off-by: NShaun Tancheff <shaun@tancheff.com>
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/rndis.c

@@ -855,9 +855,12 @@ static int rndis_query_response (int configNr, rndis_query_msg_type *buf)
 	
 	/*
 	 * we need more memory:
-	 * oid_supported_list is the largest answer 
+	 * gen_ndis_query_resp expects enough space for
+	 * rndis_query_cmplt_type followed by data.
+	 * oid_supported_list is the largest data reply
 	 */
-	r = rndis_add_response (configNr, sizeof (oid_supported_list));
+	r = rndis_add_response (configNr,
+		sizeof (oid_supported_list) + sizeof(rndis_query_cmplt_type));
 	if (!r)
 		return -ENOMEM;
 	resp = (rndis_query_cmplt_type *) r->buf;