tree d4965ea266e0415ecea063aa7e54fd41aaa311fe
parent a82d992261f79506a0d55b9a179a211f96caf878
author Johannes Berg <johannes@sipsolutions.net> 1207344817 +0200
committer John W. Linville <linville@tuxdriver.com> 1207687483 -0400

mac80211: make debugfs files root-only

Unfortunately, debugfs can be made to access invalid memory by
open()ing a file and then waiting until the corresponding debugfs
file has been removed (and, probably, the underlying object.)

That could be exploited by any user if the user is able to open
debugfs files and can cause networking devices, STA entries or
similar to disappear which is quite easy to do.

Hence, all debugfs files should be root-only.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>