[CentOS] Security updates for Centos 5.3

On Wed, 2009-10-21 at 11:11 -0500, slchavarria at iusacell.com.mx wrote:
> Someone knows which security updates i have to apply to a host with
> Centos 5.3 x_64. 

Yum knows :)
  $ yum --security check-update

You may have to install yum-security first: 
  # yum install yum-security


.t.