static void op64_poke_tx(struct b43_dmaring *ring, int slot)
{
	b43_dma_write(ring, B43_DMA64_TXINDEX,
		      (u32) (slot * sizeof(struct b43_dmadesc64)));
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.