Executive brief
OpenImageIO is a media processing library used in animation and VFX workflows to read and manipulate image files. A crafted ZIP-compressed TIFF file processed with multithreading enabled can cause the application to crash, disrupting production pipelines and affecting availability of rendering or compositing services.
Technical details
A use-after-scope vulnerability exists in the TIFF input handler's multithreaded scanline decompression path. When TIFFInput::read_native_scanlines() exits early on certain error conditions, background worker tasks attempt to access stack variables (ok and compressed_scratch) after they have been destroyed, resulting in a denial of service crash. The vulnerability requires TIFF multithreading to be enabled and a specially crafted compressed TIFF file as input.
Affected products
- Academy Software Foundation OpenImageIO prior to 3.1.16.0
Timeline
- 2026-09-18: disclosed
- 2026-07-04: patched: Fix merged to main branch