static void reclaim_dma_bufs(void)
{
	unsigned long flags;
	struct port_buffer *buf, *tmp;
	LIST_HEAD(tmp_list);

	if (list_empty(&pending_free_dma_bufs))
		return;

	/* Create a copy of the pending_free_dma_bufs while holding the lock */
	spin_lock_irqsave(&dma_bufs_lock, flags);
	list_cut_position(&tmp_list, &pending_free_dma_bufs,
			  pending_free_dma_bufs.prev);
	spin_unlock_irqrestore(&dma_bufs_lock, flags);

	/* Release the dma buffers, without irqs enabled */
	list_for_each_entry_safe(buf, tmp, &tmp_list, list) {
		list_del(&buf->list);
		free_buf(buf, true);
	}
}

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.