1 files changed, 5 insertions, 0 deletions
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 4440a9ffe9..d7e1f328d6 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -5070,6 +5070,11 @@ int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
         if (ext->present)
             num++;
     }
+    if (num == 0) {
+        *out = NULL;
+        *outlen = 0;
+        return 1;
+    }
     if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
         SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
                ERR_R_MALLOC_FAILURE);