The protesters gathered after the morning head count at the Irkutsk Region's prison camp No. 3, RIA Novosti said.
The inmates took issue with steep prices at the local store, the parole system and medical services, as well as other issues.
Order was restored after the prisoners were allowed to meet with journalists and prison officials to publicly air their complaints, a prison spokeswoman said.
Riots and protests are common in Russia's prisons, which have a reputation for bad conditions, RIA Novosti said.
Texas principal bans speaking Spanish, stirs controversy
Toddler uninjured after being knocked over by Obama family dog