checking whether iface string is null-terminated in igb_bind

1 files changed, 9 insertions, 2 deletions

diff --git a/kmod/igb/igb_main.c b/kmod/igb/igb_main.c
index c8a4a7e3..a55a2502 100644
--- a/kmod/igb/igb_main.c
+++ b/kmod/igb/igb_main.c
@@ -10218,8 +10218,15 @@ static int igb_bind(struct file *file, void __user *argp)
 
 	if (copy_from_user(&req, argp, sizeof(req)))
 		return -EFAULT;
-
-	printk("bind to iface %s\n", req.iface);
+	
+	if (req.iface[IGB_BIND_NAMESZ-1] == 0) {
+		printk("bind to iface %s\n", req.iface);
+	} else {
+		//invalid argument passed,
+		//iface string not null-terminated
+		printk("Invalid argument passed, iface string not null-terminated\n");
+		return -EINVAL;
+	}
 
 	if (igb_priv == NULL) {
 		printk("cannot find private data!\n");