patch-2.4.3 linux/drivers/char/dz.c

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diff -u --recursive --new-file v2.4.2/linux/drivers/char/dz.c linux/drivers/char/dz.c
@@ -847,10 +847,12 @@
   if (!new_info)
     return -EFAULT;
 
-  copy_from_user (&new_serial, new_info, sizeof(new_serial));
+  if(copy_from_user (&new_serial, new_info, sizeof(new_serial)))
+    return -EFAULT;
+    
   old_info = *info;
 
-  if (!suser())
+  if (!capable(CAP_SYS_ADMIN))
     return -EPERM;
 
   if (info->count > 1)

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