15 hours ago
The last kernel for 14.04 LTS is 3.13.0-170, and the latest kernel for 14.04 ESM is 3.13.0-184. Where can I find the changelog for ESM kernels and packages to understand what has been fixed in these newer releases?
25 hours ago
The best source of change information that I have found is the Ubuntu Security Notices collection. Publicly-available changelogs and Launchpad access stops at the last public release before ESM.
It is possible to search the USNs based on the Ubuntu release and the USN title. For example:
https://ubuntu.com/security/notices?order=newest&release=trusty&details=linux
To narrow it down to changes for a particular kernel version, the most reliable way I have found is to search through the ubuntu-security-announce mailing list archives, particularly the full raw archive (in mbox format). The mbox archive can be searched using mutt, for example:
mutt
wget 'https://lists.ubuntu.com/archives/ubuntu-security-announce.mbox/ubuntu-security-announce.mbox'
mutt -Rf ubuntu-security-announce.mbox
l
~s 'usn.*linux' ~b '3\.13\.0'