OpenEXR Out of Bounds Heap Read due to Bad Pointer Arithmetic in LossyDctDecoder_execute

SummaryThe OpenEXRCore code is vulnerable to a heap-based buffer overflow during a read operation due to bad pointer math when decompressing DWAA-packed scan-line EXR files with a maliciously forged chunk. DetailsIn the LossyDctDecoderexecute function from src/lib/OpenEXRCore/internaldwadecoder.h...