UBUNTU-CVE-2023-45664

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UBUNTU-CVE-2023-45664

Summary:

Details: stb_image is a single file MIT licensed library for processing images. A crafted image file can trigger `stbi__load_gif_main_outofmem` attempt to double-free the out variable. This happens in `stbi__load_gif_main` because when the `layers * stride` value is zero the behavior is implementation defined, but common that realloc frees the old memory and returns null pointer. Since it attempts to double-free the memory a few lines below the first “free”, the issue can be potentially exploited only in a multi-threaded environment. In the worst case this may lead to code execution.

References: https://ubuntu.com/security/CVE-2023-45664, https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/, https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L6993-L6995, https://www.cve.org/CVERecord?id=CVE-2023-45664