This script is a modified version of https://github.com/ojasookert/CVE-2017-0785. It leaks information via SDP due to out-of-bound bytes, but sending too many packets or search requests causes the Bluetooth module on an Android smartphone above Android 4.0 to crash.
This vulnerability may be similiar to CVE-2017-0781 in what it achieves. I believe that uses the BNEP protocol instead of the SDP protocol to cause a crash.