Hi Andrés,
There is not, unfortunately - that page is not currently set up for large bulk actions. While you may run into timeout issues if you try too much, you can temporarily change the global setting for Results per page, however - this setting affects ALL paging limits throughout AtoM, so increasing it from the default 10 results should also increase the results per page on the Description updates. See:
Just remember that this affects all paging, so consider changing it back when you are done!
Cheers,