CVE-2026-44662 — rust-openssl: Heap buffer overflow when encrypting with AES key-wrap-with-padding

2026-10-06T09:43:17.520633+00:00

Affected: rust-openssl

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.0 to before 0.10.79, CipherCtxRef::cipher_update, CipherCtxRef::cipher_update_vec, and symm::Crypter::update incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (EVP_aes_{128,192,256}_wrap_pad). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced. This only impacts users using AES key-wrap-with-padding ciphers. This vulnerability is fixed in 0.10.79.

GHSA-xv59-967r-8726 — rust-openssl vulnerable to heap buffer overflow when encrypting with AES key-wrap-with-padding

2026-10-06T09:43:17.520715+00:00

Affected: crates.io: openssl

`CipherCtxRef::cipher_update`, `CipherCtxRef::cipher_update_vec`, and `symm::Crypter::update` incorrectly sized output buffers when used with AES key-wrap-with-padding ciphers (`EVP_aes_{128,192,256}_wrap_pad`). For a non-multiple-of-8 input, OpenSSL writes up to 7 bytes past the end of the caller's buffer or Vec, producing attacker-controllable heap corruption when the plaintext length is attacker-influenced.

This only impacts users using AES key-wrap-with-padding ciphers.

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CVE-2026-44662 — rust-openssl: Heap buffer overflow when encrypting with AES key-wrap-with-padding

GHSA-xv59-967r-8726 — rust-openssl vulnerable to heap buffer overflow when encrypting with AES key-wrap-with-padding