Overall Rating: 4.3 (of 5)
The Minor 2-5-1
There are other variations which can be used.
A lot depends on how fast the chords are moving. If you think you can squeeze it in try using the melodic minor over the m7b5 and the altered scale over the 7th chord.
Alternatively you could use a diminished scale over the 7th. Both these are used below.