static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
		struct qeth_qdio_out_buffer *buf,
		enum qeth_qdio_buffer_states newbufstate)
{
	int i;

	/* is PCI flag set on buffer? */
	if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
		atomic_dec(&queue->set_pci_flags_count);

	if (newbufstate == QETH_QDIO_BUF_EMPTY) {
		qeth_release_skbs(buf);
	}
	for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
		if (buf->buffer->element[i].addr && buf->is_header[i])
			kmem_cache_free(qeth_core_header_cache,
				buf->buffer->element[i].addr);
		buf->is_header[i] = 0;
		buf->buffer->element[i].length = 0;
		buf->buffer->element[i].addr = NULL;
		buf->buffer->element[i].eflags = 0;
		buf->buffer->element[i].sflags = 0;
	}
	buf->buffer->element[15].eflags = 0;
	buf->buffer->element[15].sflags = 0;
	buf->next_element_to_fill = 0;
	atomic_set(&buf->state, newbufstate);
}

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.