Ubuntu Update for krb5, librpcsecgss vulnerability USN-511-2

Summary
Ubuntu Update for Linux kernel vulnerabilities USN-511-2
Solution
Please Install the Updated Packages.
Insight
USN-511-1 fixed vulnerabilities in krb5 and librpcsecgss. The fixes were incomplete, and only reduced the scope of the vulnerability, without fully solving it. This update fixes the problem. Original advisory details: It was discovered that the libraries handling RPCSEC_GSS did not correctly validate the size of certain packet structures. An unauthenticated remote user could send a specially crafted request and execute arbitrary code with root privileges.
Affected
krb5, librpcsecgss vulnerability on Ubuntu 6.06 LTS , Ubuntu 6.10 , Ubuntu 7.04