static int tg3_request_firmware(struct tg3 *tp)
{
	const __be32 *fw_data;

	if (request_firmware(&tp->fw, tp->fw_needed, &tp->pdev->dev)) {
		netdev_err(tp->dev, "Failed to load firmware \"%s\"\n",
			   tp->fw_needed);
		return -ENOENT;
	}

	fw_data = (void *)tp->fw->data;

	/* Firmware blob starts with version numbers, followed by
	 * start address and _full_ length including BSS sections
	 * (which must be longer than the actual data, of course
	 */

	tp->fw_len = be32_to_cpu(fw_data[2]);	/* includes bss */
	if (tp->fw_len < (tp->fw->size - 12)) {
		netdev_err(tp->dev, "bogus length %d in \"%s\"\n",
			   tp->fw_len, tp->fw_needed);
		release_firmware(tp->fw);
		tp->fw = NULL;
		return -EINVAL;
	}

	/* We no longer need firmware; we have it. */
	tp->fw_needed = NULL;
	return 0;
}

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.