OSV-2018-57 Heap-buffer-overflow in read_uncompressed_header

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=11523 Crash type: Heap-buffer-overflow READ Crash state: readuncompressedheader av1decodeframeheadersandsetup aomdecodeframefromobus...