CVE-2026-59956 OpenImageIO: Heap-buffer-overread in IffInput::readimg() when ZBUFFER flag is set

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, An uncompressed 16-bit iff image with a z-buffer makes iffinput::readimg allocate a temporary scanline from...