OSV-2024-477 Heap-buffer-overflow in ultrahdr::gain_map_metadata::decodeGainmapMetadata

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=68933 Crash type: Heap-buffer-overflow READ 1 Crash state: ultrahdr::gainmapmetadata::decodeGainmapMetadata ultrahdr::JpegR::decodeJPEGR UltraHdrDecFuzzer::process...