[PATCH] Fix ROSE security hole

[Ralf Baechle <ralf@xxxxxxxxxxxxxx>]

ROSE wasn't verifying the ndigis argument of a new route resulting in a
minor security hole.

Index: bk-afu/net/rose/rose_route.c
===================================================================
--- bk-afu.orig/net/rose/rose_route.c   2005-02-05 22:16:25.582983368 +0000
+++ bk-afu/net/rose/rose_route.c        2005-02-05 22:16:25.585982912 +0000
@@ -727,7 +727,8 @@
                }
                if (rose_route.mask > 10) /* Mask can't be more than 10 digits 
*/
                        return -EINVAL;
-
+               if (rose_route.ndigis > 8) /* No more than 8 digipeats */
+                       return -EINVAL;
                err = rose_add_node(&rose_route, dev);
                dev_put(dev);
                return err;