In Brasilia, Court President Luis Roberto Barroso said the judges ruled that 'possession of cannabis' did not constitute something 'of a criminal nature'. Photo: Internet Source

However, the judges must still define the maximum quantity of marijuana that can be considered as being for personal use, as well as when the ruling will come into effect. This decision could happen as early as Wednesday.

The Supreme Court's ruling does not legalize marijuana in Brazil but rather lessens the penalty for possession. Court president Luis Roberto Barroso said the judges ruled that "possession of cannabis for personal use is an illicit act" but not "of a criminal nature."

Brazil's existing laws against drug possession do not specify what quantity of marijuana constitutes personal use — which carries lighter punishments like community service — and what quantity constitutes drug trafficking, which carries a heavy prison term.

Supreme Court judge Alexandre de Moraes said these existing laws disproportionately harm "young people, especially Black people, who are treated as drug traffickers for possessing small amounts."