1 files changed, 5 insertions, 0 deletions

diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index 915a87ba23e1..8d7716ca5342 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -678,6 +678,11 @@ int nr_rt_ioctl(unsigned int cmd, void __user *arg)
                 }
                 switch (nr_route.type) {
                 case NETROM_NODE:
+                        if (strnlen(nr_route.mnemonic, 7) == 7) {
+                                ret = -EINVAL;
+                                break;
+                        }
+
                         ret = nr_add_node(&nr_route.callsign,
                                 nr_route.mnemonic,
                                 &nr_route.neighbour,