Bernt Marius Johnsen

**Name of the Vulnerable Software and Affected Versions** PostgreSQL versions 8.4.1 and earlier PostgreSQL versions 8.5 through 8.5alpha2 **Description** The issue is related to an integer overflow in the `src/backend/executor/nodeHash.c` file, which can be exploited by remote authenticated users to cause a denial of service, resulting in a daemon crash. This can be achieved by executing a SELECT statement with many LEFT JOIN clauses, affecting certain hashtable size calculations. **Recommendations** For PostgreSQL versions 8.4.1 and earlier, update to a version later than 8.4.1 to resolve the issue. For PostgreSQL versions 8.5 through 8.5alpha2, update to a version later than 8.5alpha2 to resolve the issue.