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GHSA-ghm9-cr32-g9qj

rust-openssl: rustMdCtxRef::digest_final() writes past caller buffer with no length check

Source: GitHub Advisory Database (reviewed) High CVE-2026-41681

Packages

EcosystemPackageAffectedFixed in
crates.io openssl >= 0.10.39, < 0.10.78 0.10.78

Details

As written in the advisory (Markdown source, shown as plain text).

`EVP_DigestFinal()` always writes `EVP_MD_CTX_size(ctx)` to the `out` buffer. If `out` is smaller than that, `MdCtxRef::digest_final()` writes past its end, usually corrupting the stack. This is reachable from safe Rust.

References

External links from the advisory. They lead to third-party sites.