[CentOS] libvirt security update CVE-2011-1146

Hello,
I have seen that package libvirt-0.8.2-15.el5_6.3 on CentOS 5.6 which 
addresses CVE-2011-1146 
<https://www.redhat.com/security/data/cve/CVE-2011-1146.html> vulnerability
is not yet available while for example it is on Scientific Linux.
Is there any particular reason why the above rpm update is still not 
available on mirrors ?

thank you

Rick

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.centos.org/pipermail/centos/attachments/20110428/dfde064e/attachment.html>