static int dell_poweredge_bt_xaction_handler(struct notifier_block *self,
					     unsigned long unused,
					     void *in)
{
	struct smi_info *smi_info = in;
	unsigned char *data = smi_info->curr_msg->data;
	unsigned int size   = smi_info->curr_msg->data_size;
	if (size >= 8 &&
	    (data[0]>>2) == STORAGE_NETFN &&
	    data[1] == STORAGE_CMD_GET_SDR &&
	    data[7] == 0x3A) {
		return_hosed_msg_badsize(smi_info);
		return NOTIFY_STOP;
	}
	return NOTIFY_DONE;
}

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.