Mandriva Linux Security Advisory 2009-245 – The g_file_copy function in glib 2.0 sets the permissions of a target file to the permissions of a symbolic link (777), which allows user-assisted local users to modify files of other users, as demonstrated by using Nautilus to modify the permissions of the user home directory. This update provides a solution to this vulnerability.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/81606/MDVSA-2009-245.txt
Source: https://packetstormsecurity.com/files/81606/Mandriva-Linux-Security-Advisory-2009-245.html