A vulnerability was discovered and corrected in postgresql:

Buffer overflow in the gettoken function in
contrib/intarray/_int_bool.c in the intarray array module in PostgreSQL
9.0.x before 9.0.3, 8.4.x before 8.4.7, 8.3.x before 8.3.14, and 8.2.x
before 8.2.20 allows remote authenticated users to cause a denial of
service (crash) and possibly execute arbitrary code via integers with
a large number of digits to unspecified functions (CVE-2010-4015).

Packages for 2009.0 are provided as of the Extended Maintenance
Program.
Please visit this link to learn more:
http://store.mandriva.com/product_info.php?cPath=149&products_id=490

This update provides a solution to this vulnerability.