The vulnerability of the X Window System graphical server allows a perpetrator to alter file access rights or cause a service failure.

The vulnerability of the LockServer function os/utils.c in the X Window System graphical server arises due to synchronization errors when using a shared resource. Exploiting this vulnerability allows an attacker acting locally to change file access rights to “444” or to cause a service failure by...

DEBIAN-CVE-2011-4029

The LockServer function in os/utils.c in X.Org xserver before 1.11.2 allows local users to change the permissions of arbitrary files to 444, read those files, and possibly cause a denial of service removed execution permission via a symlink attack on a temporary lock file...