Mandriva Linux Security Advisory – Tavis Ormandy of the Google Security Team discovered a heap-based buffer overflow when compiling certain regular expression patterns. This could be used by a malicious attacker by sending a specially crafted regular expression to an application using the PCRE library, resulting in the possible execution of arbitrary code or a denial of service. The updated packages have been patched to correct this issue.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/68240/MDVSA-2008-147.txt
Source: https://packetstormsecurity.com/files/68240/Mandriva-Linux-Security-Advisory-2008-147.html