openssl: double free after calling PEM_read_bio_ex

A double-free vulnerability was found in OpenSSL's PEMreadbioex function. The function PEMreadbioex reads a PEM file from a BIO and parses and decodes the "name" for example, "CERTIFICATE", any header data, and the payload data. If the function succeeds, then the "nameout," "header," and "data"...