Speex is a patent-free compression format designed especially for speech. The Speex package contains a library for handling Speex files and sample encoder and decoder implementations using this library.
The Speex library was found to not properly validate input values read from the Speex files headers. An attacker could create a malicious Speex file that would crash an application or, possibly, allow arbitrary code execution with the privileges of the application calling the Speex library. (CVE-2008-1686)
All users of speex are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue.