CVE-2023-45667: Nothings Stb Image.h

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

stb_image is a single file MIT licensed library for processing images. If `stbi__load_gif_main` in `stbi_load_gif_from_memory` fails it returns a null pointer and may keep the `z` variable uninitialized. In case the caller also sets the flip vertically flag, it continues and calls `stbi__vertical_flip_slices` with the null pointer result value and the uninitialized `z` value. This may result in a program crash.

Affected products

• Nothings Stb Image.h: version 2.28 only

Published 2023-10-21. Last modified 2026-06-17.