Description: Red Hat has issued an update for XFree86, which fixes various security issues.
Insecure permissions on "/dev/dri" has been fixed.
The "LD_PRELOAD" environment variable privilege escalation vulnerability has been fixed (it is referenced with CAN/CVE number, but has not been described by Red Hat. This only affects 7.3 and 8.0).
A vulnerability allowing users to read and write arbitrary shared memory has been fixed.
A vulnerability allowing malicious people to connect the to the X server if "authComplain" is false and the xdm auth directory doesn't exist has been fixed (this only affects 7.1, 7.2 and Enterprise Linux 2.1).
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