proto: Fix possible buffer overflow due to non null terminated string

[project/netifd.git] / proto.c

diff --git a/proto.c b/proto.c
index eaec913..b91fcde 100644 (file)
--- a/proto.c
+++ b/proto.c
@@ -287,7 +287,7 @@ static bool
 parse_prefix_option(struct interface *iface, const char *str, size_t len)
 {
        char buf[128] = {0}, *saveptr;
-       if (len > sizeof(buf))
+       if (len >= sizeof(buf))
                return false;
 
        memcpy(buf, str, len);