--- lib/ssluse.c.orig
+++ lib/ssluse.c
@@ -1492,6 +1492,10 @@ ossl_connect_step1(struct connectdata *c
     return CURLE_OUT_OF_MEMORY;
   }
 
+#ifdef SSL_MODE_RELEASE_BUFFERS
+  SSL_CTX_set_mode(connssl->ctx, SSL_MODE_RELEASE_BUFFERS);
+#endif
+
 #ifdef SSL_CTRL_SET_MSG_CALLBACK
   if(data->set.fdebug && data->set.verbose) {
     /* the SSL trace callback is only used for verbose logging so we only