The warranty against redhibitory vices is owed by each of multiple sellers in proportion to his interest.
Multiple buyers must concur in an action for rescission because of a redhibitory defect. An action for reduction of the price may be brought by one of multiple buyers in proportion to his interest.
The same rules apply if a thing with a redhibitory defect is transferred, inter vivos or mortis causa, to multiple successors.
La. C.C. § 2538