CVE-2026-41681: rust-openssl: rustMdCtxRef::digest_final() writes past caller buffer with no length check
(updated )
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
- github.com/advisories/GHSA-ghm9-cr32-g9qj
- github.com/rust-openssl/rust-openssl/commit/826c3888b77add418b394770e2b2e3a72d9f92fe
- github.com/rust-openssl/rust-openssl/pull/2608
- github.com/rust-openssl/rust-openssl/releases/tag/openssl-v0.10.78
- github.com/rust-openssl/rust-openssl/security/advisories/GHSA-ghm9-cr32-g9qj
- nvd.nist.gov/vuln/detail/CVE-2026-41681
Code Behaviors & Features
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