frr:zebra: Stack-buffer-overflow in stream_get2

Detailed Report: https://oss-fuzz.com/testcase?key=6753001336537088 Project: frr Fuzzing Engine: libFuzzer Fuzz Target: zebra Job Type: libfuzzerasanfrr Platform Id: linux Crash Type: Stack-buffer-overflow WRITE Crash Address: 0x746fc00d1920 Crash State: streamget2 zreadsrv6managerrequest...