Add test case found through fuzzing to pkparse test suite
@@ -486,3 +486,6 @@ pk_parse_key_rsa:"301c02010002010102010102010102010102010102010102010102010100":
Key ASN1 (RSAPrivateKey, values present, check_privkey fails)
pk_parse_key_rsa:"301b020100020102020101020101020101020101020101020101020101":"":MBEDTLS_ERR_PK_KEY_INVALID_FORMAT
+
+Key ASN1 (heap-buffer-overflow, unchecked access of tag)
+pk_parse_key_rsa:"30070201010400a000":"":MBEDTLS_ERR_PK_KEY_INVALID_FORMAT
