Marcus Thompson of The Athletic first reported the news.
Anthony Slater of The Athletic reported Curry underwent a CT scan Thursday, noting the Warriors will have specialists look at the results and that there has been no decision on surgery or a timetable for his return.
Curry, 31, had another brilliant season for the Warriors in 2018-19, averaging 27.3 points and 5.2 assists in 69 games. He shot 47.2 percent from the field and 43.7 percent from deep, and his 354 made three-pointers were the third-most in a single season in NBA history, trailing only the mark he set in 2015-16 (402) and James Harden's total in 2018-19 (378).
The Warriors are still a talented team, with Draymond Green and D'Angelo Russell available to pick up the slack while Curry and Klay Thompson are sidelined.
But injuries remain an issue for Curry at this stage in his career. He missed a handful of games to a number of knocks last season, including spraining his right ankle on several occasions and suffering a sprained left MCL late in the year. The wear and tear of five straight appearances in the NBA Finals has taken a toll.
While Curry is out of action, Russell will likely assume point guard duties.