I’m not a Unix guy so my information is coming from those engineers, please excuse any of my misunderstandings as well.
Some of our customers subscribed to EUS, but that shouldn’t be too relevant here.
If you don’t lock to a specific version you are assumed to be on the “latest” release, however, RHEL provide full support for both the latest and the latest -1 versions, and the process to move from one release to the next needs to be a planned step, as additional features and changes will break some applications.
So, in more concrete teams, 7.8 is now the latest, but RedHat is still releasing all patches for both 7.8 and 7.7 including all security patches. Most customers will not move to 7.8 immediately, but are fully covered by staying on 7.7 for a period of time (approx 6 months), however the report does not indicate that is the case, as the patch “numbers” are slightly different.
My example earlier is probably not the best now that 7.8 has been released. So if I change 7.6 to 7.7 the same problem still occurs as I could install all patches to the 7.7 according to Satellite, but Bigfix will still not report full compliance since 7.8 fixlets would be relevant.