libxml2 - several vulnerabilities

Several vulnerabilities have been discovered in the GNOME XML library.
The Common Vulnerabilities and Exposures project identifies the
following problems:

• CVE-2008-4225
  Drew Yao discovered that missing input sanitising in the
  xmlBufferResize() function may lead to an infinite loop,
  resulting in denial of service.
• CVE-2008-4226
  Drew Yao discovered that an integer overflow in the
  xmlSAX2Characters() function may lead to denial of service or
  the execution of arbitrary code.

For the stable distribution (etch), these problems have been fixed in
version 2.6.27.dfsg-6.

For the upcoming stable distribution (lenny) and the unstable
distribution (sid), these problems have been fixed in
version 2.6.32.dfsg-5.

We recommend that you upgrade your libxml2 packages.