It was never a big problem
Krokodil epidemic is mostly Kazakhstan's problem and some years ago it spread to the towns across the border in Russia. But I don't think it really quite caught on (thank God, obviously). No idea what's happening there now but I haven't heard about it in a long time since no local news sources (even non-government and anti-Putin ones) ever mention it.
You can't buy krokodil at the marketplace I mentioned earlier (although from what I know krokodil can be actually very easily made at home), but you can score heroin.