static int tg3_load_firmware_cpu(struct tg3 *tp, u32 cpu_base,
				 u32 cpu_scratch_base, int cpu_scratch_size,
				 struct fw_info *info)
{
	int err, lock_err, i;
	void (*write_op)(struct tg3 *, u32, u32);

	if (cpu_base == TX_CPU_BASE && tg3_flag(tp, 5705_PLUS)) {
		netdev_err(tp->dev,
			   "%s: Trying to load TX cpu firmware which is 5705\n",
			   __func__);
		return -EINVAL;
	}

	if (tg3_flag(tp, 5705_PLUS))
		write_op = tg3_write_mem;
	else
		write_op = tg3_write_indirect_reg32;

	/* It is possible that bootcode is still loading at this point.
	 * Get the nvram lock first before halting the cpu.
	 */
	lock_err = tg3_nvram_lock(tp);
	err = tg3_halt_cpu(tp, cpu_base);
	if (!lock_err)
		tg3_nvram_unlock(tp);
	if (err)
		goto out;

	for (i = 0; i < cpu_scratch_size; i += sizeof(u32))
		write_op(tp, cpu_scratch_base + i, 0);
	tw32(cpu_base + CPU_STATE, 0xffffffff);
	tw32(cpu_base + CPU_MODE, tr32(cpu_base+CPU_MODE)|CPU_MODE_HALT);
	for (i = 0; i < (info->fw_len / sizeof(u32)); i++)
		write_op(tp, (cpu_scratch_base +
			      (info->fw_base & 0xffff) +
			      (i * sizeof(u32))),
			      be32_to_cpu(info->fw_data[i]));

	err = 0;

out:
	return err;
}

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.