How to stop other strings from ringing when bending

Some ways to do that are:

1. Mute with the index finger of your fretting (left) hand and use middle and ring fingers to bend. ...
2. Use palm of your picking (right) hand to mute all strings above the sounding one. ...
3. Muting with a thumb is another way. ...
4. Cheat with a string muter if you don't use open strings a lot.

1. Why do my fingers go under the strings when I bend?

Why do my fingers go under the strings when I bend?

Re: Setup needed? Fingers going under strings when bending. In short: that sounds as if your string height (i.e. action) is too high.