In the Linux kernel, the following vulnerability has been resolved: irqchip/realtek-rtl: Fix refcount leak in mapinterrupts offindnodebyphandle() returns a node pointer with refcount incremented, we should use ofnodeput() on it when not need anymore. This function doesn't call ofnodeput() in error path. Call ofnodeput() directly after ofpropertyreadu32() to cover both normal path and error path.