Your plants were attacked by aphids while they were actively sending out new buds earlier this Spring. What you see is typical aphid damage: scar tissue and deformed growth. The aphids are long gone and the problem now is merely cosmetic: those leaves will just look bad as the season progresses.
There are literally dozens of species of aphids attacking ornamental roses: they are generally active in the Spring when growth is resuming. That's when you should keep an eye on your plants for them. They manifest themselves as large clusters of tiny insects on new growth.
They can be eliminated by using insecticides, washing the new growth (throughly! Over 90% of aphid populations are females capable of partenogenesis, so miss a few and they'll be back sooner than you like) with a water jet or smothering them by spraying them with agricultural mineral oil.
