| Name | CVE-2026-41676 |
| Description | rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive (and PkeyCtxRef::derive) sets len = buf.len() and passes it as the in/out length to EVP_PKEY_derive, relying on OpenSSL to honor it. On OpenSSL 1.1.x, X25519, X448, DH and HKDF-extract ignore the incoming *keylen, unconditionally writing the full shared secret (32/56/prime-size bytes). A caller passing a short slice gets a heap/stack overflow from safe code. OpenSSL 3.x providers do check, so this only impacts older OpenSSL. This vulnerability is fixed in 0.10.78. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1134881 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| rust-openssl (PTS) | bullseye | 0.10.29-1 | vulnerable |
| bullseye (security) | 0.10.29-1+deb11u1 | vulnerable | |
| bookworm | 0.10.45-1 | vulnerable | |
| trixie | 0.10.72-1 | vulnerable | |
| forky | 0.10.73-1 | vulnerable | |
| sid | 0.10.78-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| rust-openssl | source | (unstable) | 0.10.78-1 | 1134881 |
[trixie] - rust-openssl <no-dsa> (Minor issue)
[bookworm] - rust-openssl <no-dsa> (Minor issue)
https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-pqf5-4pqq-29f5