Debian DSA-1466-3 Critical: XFree86 Local Escalation Issues

For the reference the original advisory text below:

Several local vulnerabilities have been discovered in the X.Org X
server. The Common Vulnerabilities and Exposures project identifies the
following problems:

CVE-2007-5760

"regenrecht" discovered that missing input sanitising within
the XFree86-Misc extension may lead to local privilege escalation.

CVE-2007-5958

It was discovered that error messages of security policy file
handling may lead to a minor information leak disclosing the
existance of files otherwise unaccessible to the user.

CVE-2007-6427

"regenrecht" discovered that missing input sanitising within
the XInput-Misc extension may lead to local privilege escalation.

CVE-2007-6428

"regenrecht" discovered that missing input sanitising within
the TOG-CUP extension may lead to disclosure of memory contents.

CVE-2007-6429

"regenrecht" discovered that integer overflows in the EVI
and MIT-SHM extensions may lead to local pri...