Comment 2 for bug 1486946

trusty and utopic are currently on 0.6.2+dfsg-1, whereas vivid and wily are on 0.6.2+dfsg-2. The only change from 0.6.2+dfsg-1 to 0.6.2+dfsg-2 is the security fix. So you just need to merge the respective debdiff into trusty and utopic.
For precise it is not that easy, since it is on 0.6.1+dfsg-1.