CVE-2023-45667
Published: October 21, 2023Last modified: July 18, 2025
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | stb | Unknown (0_git20231012-r0) |
| Stream | stb | Unknown (0_git20231012-r0) |
References
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1442-L1454
- https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1448
- https://lists.fedoraproject.org/archives/list/[email protected]/message/NMXKOKPP4BKTNUTF5KSRDQAWOUILQZNO/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/QVABVF4GEM6BYD5L4L64RCRSXUHY6LGN/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/UVQ7ONFH5GWLMXYEAJG32A3EUKUCEVCR/
- https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/