diff --git a/drivers/net/ppp_generic.c b/drivers/net/ppp_generic.c
index 144375dea2deff1bc6b4393f2379cade82ae86bc..0db38946bc0a93b9b13f953b17b0182a0b321ddd 100644
--- a/drivers/net/ppp_generic.c
+++ b/drivers/net/ppp_generic.c
@@ -538,14 +538,9 @@ static int get_filter(void __user *arg, struct sock_filter **p)
 	}
 
 	len = uprog.len * sizeof(struct sock_filter);
-	code = kmalloc(len, GFP_KERNEL);
-	if (code == NULL)
-		return -ENOMEM;
-
-	if (copy_from_user(code, uprog.filter, len)) {
-		kfree(code);
-		return -EFAULT;
-	}
+	code = memdup_user(uprog.filter, len);
+	if (IS_ERR(code))
+		return PTR_ERR(code);
 
 	err = sk_chk_filter(code, uprog.len);
 	if (err) {