ffmpeg/ffmpeg_DEMUXER_fuzzer: Heap-buffer-overflow in read_sb_block

Project: https://git.ffmpeg.org/ffmpeg.git Detailed report: https://oss-fuzz.com/testcase?key=5658343542095872 Project: ffmpeg Fuzzer: libFuzzerffmpegDEMUXERfuzzer Fuzz target binary: ffmpegDEMUXERfuzzer Job Type: libfuzzerasanffmpeg Platform Id: linux Crash Type: Heap-buffer-overflow WRITE 8 Cra...