Thats the release guide contains caveat section for bugs identified , field notice as well that's whats available on Cisco website
http://www.cisco.com/c/en/us/support/docs/field-notices/637/fn63722.html
http://www.cisco.com/c/en/us/support/ios-nx-os-software/ios-software-releases-12-2-se/products-release-notes-list.html