| Security | |
| * Fix a buffer overflow in mbedtls_pk_write_pubkey(), | |
| mbedtls_pk_write_pubkey_der(), mbedtls_pk_write_pubkey_pem(), | |
| mbedtls_pk_write_key_der() and mbedtls_pk_write_key_pem(). | |
| With MBEDTLS_USE_PSA_CRYPTO turned on, these functions would | |
| write to a location before the start of the output buffer if it was less | |
| than the size of the key being written and also less than | |
| PK_MAX_EC_PUBLIC_KEY_SIZE (for EC public keys) and | |
| PSA_EXPORT_KEY_PAIR_MAX_SIZE (for RSA private keys). | |
| This buffer overflow only occurs for keys with the type MBEDTLS_PK_OPAQUE. |