Debian DSA-1193-1: XFree86 Local Execution Issues Critical

Chris Evan discovered an integer overflow in the code to handle
PCF fonts, which might lead to denial of service if a malformed
font is opened.

CVE-2006-3739

It was discovered that an integer overflow in the code to handle
Adobe Font Metrics might lead to the execution of arbitrary code.

CVE-2006-3740

It was discovered that an integer overflow in the code to handle
CMap and CIDFont font data might lead to the execution of arbitrary
code.

CVE-2006-4447

The XFree86 initialization code performs insufficient checking of
the return value of setuid() when dropping privileges, which might
lead to local privilege escalation.

For the stable distribution (sarge) these problems have been fixed in
version 4.3.0.dfsg.1-14sarge2. This release lacks builds for the
Motorola 680x0 architecture, which failed due to diskspace constraints
on the build host. They will be released once this problem has been
resolved.

For the unstable distribution (sid)...