samba - Apr 2012 - FW: Regd Security patches for Red hat linux

Hello,
Good afternoon

Am trying to install the security patches from
https://www.samba.org/samba/history/security.html  (to avoid Remote code
execution vulnerability in smbd and my samba version is 3.0.37). Can you please
suggest me which patch I have to install and also how to install the package in
my Red hat Linux server 5.5

Thanks
Vipanhesh