libzmq vulnerabilities (OSS-Fuzz)

4 vulnerabilities.

• libzmq OSS-Fuzz Heap-buffer-overflow in zmq::tcp_read OSV-2020-1887 Fix available No scoreSeptember 30, 2020
• libzmq OSS-Fuzz Heap-buffer-overflow in zmq_z85_decode OSV-2020-1655 Fix available No scoreAugust 24, 2020
• libzmq OSS-Fuzz Use-of-uninitialized-value in zmq::stream_engine_base_t::out_event OSV-2020-910 Fix available No scoreJuly 21, 2020
• libzmq OSS-Fuzz Bad-cast to zmq::session_base_t from invalid vptr OSV-2020-784 Fix available No scoreJuly 14, 2020