1 files changed, 4 insertions, 0 deletions
diff --git a/nrconfig.c b/nrconfig.c
index 003dfb2..18fb6e1 100644
--- a/nrconfig.c
+++ b/nrconfig.c
@@ -18,6 +18,8 @@
 #include <netax25/axlib.h>
 #include <netax25/nrconfig.h>
 
+#include "util.h"
+
 typedef struct _nrport
 {
 	struct _nrport *Next;
@@ -291,6 +293,8 @@ int nr_config_load_ports(void)
 			while (isspace(*s & 0xff)) ++s;
 
 			memset(&ifr, 0, sizeof(ifr));
+			if (strlen(s) >= IFNAMSIZ)
+				unreachable();
 			strncpy(ifr.ifr_name, s, IFNAMSIZ-1);
 			ifr.ifr_name[IFNAMSIZ-1] = 0;