Recently, I got a chance to read git tag command. We found a bug and confirmed which commit has introduced it, but we could not point out which released versions are affected.

Apparently, git tag command supports --contains argument. This argument takes the commit hash.

git tag --contains 12AB34

It might show too many lines. Then you can use --list (-l in short) argument which allows you to filter the tags with pattern. For example,

git tag --contains 12AB34 --list 4.2.*