--- src/core/sipe-tls.c
+++ src/core/sipe-tls.c.new
@@ -427,7 +427,7 @@
 	gsize half           = (secret_length + 1) / 2;
 	gsize newseed_length = label_length + seed_length;
 	/* secret: used as S1; secret2: last half of original secret (S2) */
-	guchar *secret2 = g_memdup(secret + secret_length - half, half);
+	guchar *secret2 = g_memdup2(secret + secret_length - half, half);
 	guchar *newseed = g_malloc(newseed_length);
 	guchar *md5, *dest;
 	guchar *sha1, *src;
@@ -1525,7 +1525,7 @@
 
 	/* found all the required fields */
 	state->server_random.length = server_random->length;
-	state->server_random.buffer = g_memdup(server_random->data,
+	state->server_random.buffer = g_memdup2(server_random->data,
 					       server_random->length);
 	tls_calculate_secrets(state);