CVE-2026-43905 OpenImageIO: JPEG2000 (OpenJPH) signed integer overflow in buffer allocation

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, jpeg2000input.cpp:395 computes buffer size as const int bufsize = w h ch bufferbpp using signed 32-bit arithmetic. When the product...