Ubuntu Update for postgresql-9.1 USN-1717-1

Solution
Please Install the Updated Packages.
Insight
Sumit Soni discovered that PostgreSQL incorrectly handled calling a certain internal function with invalid arguments. An authenticated attacker could use this issue to cause PostgreSQL to crash, resulting in a denial of service.
Affected
postgresql-9.1 on Ubuntu 12.10 , Ubuntu 12.04 LTS , Ubuntu 11.10 , Ubuntu 10.04 LTS , Ubuntu 8.04 LTS