[PATCH] fix permissions for 'debug' parameter in sysfs

[Sergey V. <vs...@al...>]

The bug (CVE-2005-3179) was fixed in the Linux tree some time ago:

http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=c0758146adbe39514e75ac860ce7e49f865c2297

Here is the equivalent patch for the DRI CVS code:

--- drm-2006.01.03/linux-core/drm_stub.c.debug-rights	2006-01-03 20:02:11 +0300
+++ drm-2006.01.03/linux-core/drm_stub.c	2006-01-03 20:18:39 +0300
@@ -48,7 +48,7 @@ MODULE_PARM_DESC(cards_limit, "Maximum n
 MODULE_PARM_DESC(debug, "Enable debug output");
 
 module_param_named(cards_limit, drm_cards_limit, int, S_IRUGO);
-module_param_named(debug, drm_debug, int, S_IRUGO|S_IWUGO);
+module_param_named(debug, drm_debug, int, S_IRUSR|S_IWUSR);
 
 drm_head_t **drm_heads;
 struct drm_sysfs_class *drm_class;