Below is an excerpt from the Stage 2 fire restriction order recently issued for the White River National Forest. I assume the liquid/gas stove exemption also applies elsewhere, but it's probably a good idea to check the order(s) for your specific area.
PROHIBITIONS: This Order prohibits the following acts in the Restricted Area:
1) Igniting, building, maintaining, attending or using a fire, including fires in developed recreation sites (campgrounds and picnic areas), charcoal grills and barbecues, coal and wood burning stoves, and sheepherder’s stoves. 36 CFR § 261.52(a).
EXEMPTIONS:
Pursuant to 36 CFR § 261.50(e), the following persons are exempt from specified Prohibitions of this Order:
3) Persons using pressurized liquid or gas devices (stoves, grills or lanterns) with shut-off valves in an area at least three feet from any flammable materials are exempt from Prohibition #1.