FreeBSD: VID-dc087dad-bd71-11ef-b5a1-000ec6d40964 (CVE-2024-54137): liboqs -- Correctness error in HQC decapsulation

The Open Quantum Safe project reports: A correctness error has been identified in the reference implementation of the HQC key encapsulation mechanism. Due to an indexing error, part of the secret key is incorrectly treated as non-secret data. This results in an incorrect shared secret value being returned when the decapsulation function is called with a malformed ciphertext. No concrete attack exploiting the error has been identified at this point. However, the error involves mishandling of the secret key, and in principle this presents a security vulnerability.