curl/curl_fuzzer_imap: Heap-buffer-overflow in fuzz_read_callback

Project: https://github.com/curl/curl.git Detailed report: https://oss-fuzz.com/testcase?key=5817192030404608 Project: curl Fuzzer: aflcurlfuzzerimap Fuzz target binary: curlfuzzerimap Job Type: aflasancurl Platform Id: linux Crash Type: Heap-buffer-overflow WRITE Crash Address: 0x62a0000054a0...