For the recent kernel bugs, where not fixed, all that should be necessary is to run an older version.
I would definitely caution others to verify and verify again before purchasing a DAC unseen for the RPi
I would caution against buying
any audio interface for
any linux system without making absolutely sure that it will work. It takes a lot of googling. Linuxmusicians forum has a wikki, but, being used by studio people, there are probably not many DACs listed. Computer Audiophile is another source. Ultimately, check with the manufacturer.
An example is my recent high[er]-end ambitions for my headphone listening. I had focussed on the Burson Conductor, and emailed them. No, the USB interface would not work with Linux, they said (and I didn't want to have to add a board just to get toslink out).
Sad but true: we still have to ask
Will It Work With Linux before buying peripherals and this is especially true of audio. "Class-compliant" devices are
supposed to work, but, for others, it is unlikely that the makers will provide Linux drivers and, for the audiophile, rather than music-making, market, it is unlikely that the community will have the devices to decode. Buyer Beware!
Hats off the the manufacturers who not only make their devices class-compliant, but stick out their necks and
say, "Works with Linux." Off hand, I can think of the Juli@ and the ODAC where this is true.