An integer overflow could occur when OpenEXR processes a crafted file on systems where size_t is less than 64 bits. This issue could cause an invalid bytesPerLine and maxBytesPerLine value, which leads to problems with application stability or other attack paths. In ImfChromaticities.cpp routine RGBtoXYZ, there are some division operations such as `float Z = * Y / chroma.white.y;` and `chroma.green.y *