1 files changed, 6 insertions, 0 deletions
diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c
index 7e033ceb16..aa38fada70 100644
--- a/ssl/statem/statem_srvr.c
+++ b/ssl/statem/statem_srvr.c
@@ -2481,6 +2481,12 @@ int tls_construct_server_key_exchange(SSL *s, WPACKET *pkt)
         }
 
         dh = EVP_PKEY_get0_DH(s->s3->tmp.pkey);
+        if (dh == NULL) {
+            SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+                     SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
+                     ERR_R_INTERNAL_ERROR);
+            goto err;
+        }
 
         EVP_PKEY_free(pkdh);
         pkdh = NULL;