Rust advisories / stb_image
Vulnerability MediumRUSTSEC-2023-0021 · stb_image
RUSTSEC-2023-0021: NULL pointer dereference in `stb_image`
Short answerA security vulnerability in the stb_image crate: NULL pointer dereference in `stb_image`. GitHub rates it Medium. Fixed in 0.2.5: update to a fixed version.
| Crate | stb_image |
|---|---|
| Type | Vulnerability (memory-corruption) |
| Affected versions | Before 0.2.5. |
| Fixed in | 0.2.5 |
| Severity | Medium (GitHub rating) |
| Published | 2023-03-19 |
| Last changed | 2023-11-08 |
| Also known as | GHSA-ppjr-267j-5p9x |
What to do
- See which version you have:
cargo tree -i stb_image(it also shows which of your dependencies pulls it in). - Update within your version requirement:
cargo update -p stb_image. If the fix is a newer major or minor than your requirement allows, raise it in Cargo.toml (for examplestb_image = "0.2.5") or update the dependency that pulls it in. - Check again with
cargo audit, or paste your Cargo.lock into our Cargo.toml checker.
Details from the advisory
A bug in error handling in the stb_image C library could cause a NULL pointer dereference when attempting to load an invalid or unsupported image file. This is fixed in version 0.2.5 and later of the stb_image Rust crate, by patching the C code to correctly handle NULL pointers.
Thank you to GitHub user 0xdd96 for finding and fixing this vulnerability.
References
- Package: crates.io/crates/stb_image
- Advisory: rustsec.org/advisories/RUSTSEC-2023-0021.html
- Web: github.com/servo/rust-stb-image/pull/102
From the RustSec Advisory Database (CC0-1.0) via the OSV export, downloaded Oct 24, 2026. Severity score computed from the published CVSS vector.
Up next
Are you affected?Check your whole dependency treePaste Cargo.lock: every advisory, for your exact versions.Read it next →Also worth your time
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