php_mysqlnd_rowp_read_text_protocol_aux(MYSQLND_MEMORY_POOL_CHUNK * row_buffer, zval ** fields,
									unsigned int field_count, const MYSQLND_FIELD * fields_metadata,
									zend_bool as_int_or_float, zend_bool copy_data, MYSQLND_STATS * stats TSRMLS_DC)
{
	
	unsigned int i;
	zend_bool last_field_was_string = FALSE;
	zval **current_field, **end_field, **start_field;
 	zend_uchar * p = row_buffer->ptr;
 	size_t data_size = row_buffer->app;
 	zend_uchar * bit_area = (zend_uchar*) row_buffer->ptr + data_size + 1; /* we allocate from here */
	const zend_uchar * const packet_end = (zend_uchar*) row_buffer->ptr + data_size;
 
 	DBG_ENTER("php_mysqlnd_rowp_read_text_protocol_aux");
 
	if (!fields) {
		DBG_RETURN(FAIL);
	}

	end_field = (start_field = fields) + field_count;

	for (i = 0, current_field = start_field; current_field < end_field; current_field++, i++) {
		DBG_INF("Directly creating zval");
		MAKE_STD_ZVAL(*current_field);
		if (!*current_field) {
			DBG_RETURN(FAIL);
		}
	}

	for (i = 0, current_field = start_field; current_field < end_field; current_field++, i++) {
 		/* Don't reverse the order. It is significant!*/
 		zend_uchar *this_field_len_pos = p;
 		/* php_mysqlnd_net_field_length() call should be after *this_field_len_pos = p; */
		const unsigned long len = php_mysqlnd_net_field_length(&p);
 
		if (len != MYSQLND_NULL_LENGTH && ((p + len) > packet_end)) {
			php_error_docref(NULL, E_WARNING, "Malformed server packet. Field length pointing "MYSQLND_SZ_T_SPEC
											  " bytes after end of packet", (p + len) - packet_end - 1);
			DBG_RETURN(FAIL);
		}
 		if (copy_data == FALSE && current_field > start_field && last_field_was_string) {
 			/*
 			  Normal queries:
			  We have to put \0 now to the end of the previous field, if it was
			  a string. IS_NULL doesn't matter. Because we have already read our
			  length, then we can overwrite it in the row buffer.
			  This statement terminates the previous field, not the current one.

			  NULL_LENGTH is encoded in one byte, so we can stick a \0 there.
			  Any string's length is encoded in at least one byte, so we can stick
			  a \0 there.
			*/

			*this_field_len_pos = '\0';
		}

		/* NULL or NOT NULL, this is the question! */
		if (len == MYSQLND_NULL_LENGTH) {
			ZVAL_NULL(*current_field);
			last_field_was_string = FALSE;
		} else {
#if defined(MYSQLND_STRING_TO_INT_CONVERSION)
			struct st_mysqlnd_perm_bind perm_bind =
					mysqlnd_ps_fetch_functions[fields_metadata[i].type];
#endif
			if (MYSQLND_G(collect_statistics)) {
				enum_mysqlnd_collected_stats statistic;
				switch (fields_metadata[i].type) {
					case MYSQL_TYPE_DECIMAL:	statistic = STAT_TEXT_TYPE_FETCHED_DECIMAL; break;
					case MYSQL_TYPE_TINY:		statistic = STAT_TEXT_TYPE_FETCHED_INT8; break;
					case MYSQL_TYPE_SHORT:		statistic = STAT_TEXT_TYPE_FETCHED_INT16; break;
					case MYSQL_TYPE_LONG:		statistic = STAT_TEXT_TYPE_FETCHED_INT32; break;
					case MYSQL_TYPE_FLOAT:		statistic = STAT_TEXT_TYPE_FETCHED_FLOAT; break;
					case MYSQL_TYPE_DOUBLE:		statistic = STAT_TEXT_TYPE_FETCHED_DOUBLE; break;
					case MYSQL_TYPE_NULL:		statistic = STAT_TEXT_TYPE_FETCHED_NULL; break;
					case MYSQL_TYPE_TIMESTAMP:	statistic = STAT_TEXT_TYPE_FETCHED_TIMESTAMP; break;
					case MYSQL_TYPE_LONGLONG:	statistic = STAT_TEXT_TYPE_FETCHED_INT64; break;
					case MYSQL_TYPE_INT24:		statistic = STAT_TEXT_TYPE_FETCHED_INT24; break;
					case MYSQL_TYPE_DATE:		statistic = STAT_TEXT_TYPE_FETCHED_DATE; break;
					case MYSQL_TYPE_TIME:		statistic = STAT_TEXT_TYPE_FETCHED_TIME; break;
					case MYSQL_TYPE_DATETIME:	statistic = STAT_TEXT_TYPE_FETCHED_DATETIME; break;
					case MYSQL_TYPE_YEAR:		statistic = STAT_TEXT_TYPE_FETCHED_YEAR; break;
					case MYSQL_TYPE_NEWDATE:	statistic = STAT_TEXT_TYPE_FETCHED_DATE; break;
					case MYSQL_TYPE_VARCHAR:	statistic = STAT_TEXT_TYPE_FETCHED_STRING; break;
					case MYSQL_TYPE_BIT:		statistic = STAT_TEXT_TYPE_FETCHED_BIT; break;
					case MYSQL_TYPE_NEWDECIMAL:	statistic = STAT_TEXT_TYPE_FETCHED_DECIMAL; break;
					case MYSQL_TYPE_ENUM:		statistic = STAT_TEXT_TYPE_FETCHED_ENUM; break;
					case MYSQL_TYPE_SET:		statistic = STAT_TEXT_TYPE_FETCHED_SET; break;
					case MYSQL_TYPE_JSON:		statistic = STAT_TEXT_TYPE_FETCHED_JSON; break;
					case MYSQL_TYPE_TINY_BLOB:	statistic = STAT_TEXT_TYPE_FETCHED_BLOB; break;
					case MYSQL_TYPE_MEDIUM_BLOB:statistic = STAT_TEXT_TYPE_FETCHED_BLOB; break;
					case MYSQL_TYPE_LONG_BLOB:	statistic = STAT_TEXT_TYPE_FETCHED_BLOB; break;
					case MYSQL_TYPE_BLOB:		statistic = STAT_TEXT_TYPE_FETCHED_BLOB; break;
					case MYSQL_TYPE_VAR_STRING:	statistic = STAT_TEXT_TYPE_FETCHED_STRING; break;
					case MYSQL_TYPE_STRING:		statistic = STAT_TEXT_TYPE_FETCHED_STRING; break;
					case MYSQL_TYPE_GEOMETRY:	statistic = STAT_TEXT_TYPE_FETCHED_GEOMETRY; break;
					default: statistic = STAT_TEXT_TYPE_FETCHED_OTHER; break;
				}
				MYSQLND_INC_CONN_STATISTIC_W_VALUE2(stats, statistic, 1, STAT_BYTES_RECEIVED_PURE_DATA_TEXT, len);
			}
#ifdef MYSQLND_STRING_TO_INT_CONVERSION
			if (as_int_or_float && perm_bind.php_type == IS_LONG) {
				zend_uchar save = *(p + len);
				/* We have to make it ASCIIZ temporarily */
				*(p + len) = '\0';
				if (perm_bind.pack_len < SIZEOF_LONG) {
					/* direct conversion */
					int64_t v =
#ifndef PHP_WIN32
						atoll((char *) p);
#else
						_atoi64((char *) p);
#endif
					ZVAL_LONG(*current_field, (long) v); /* the cast is safe */
				} else {
					uint64_t v =
#ifndef PHP_WIN32
						(uint64_t) atoll((char *) p);
#else
						(uint64_t) _atoi64((char *) p);
#endif
					zend_bool uns = fields_metadata[i].flags & UNSIGNED_FLAG? TRUE:FALSE;
					/* We have to make it ASCIIZ temporarily */
#if SIZEOF_LONG==8
					if (uns == TRUE && v > 9223372036854775807L)
#elif SIZEOF_LONG==4
					if ((uns == TRUE && v > L64(2147483647)) ||
						(uns == FALSE && (( L64(2147483647) < (int64_t) v) ||
						(L64(-2147483648) > (int64_t) v))))
#else
#error Need fix for this architecture
#endif /* SIZEOF */
					{
						ZVAL_STRINGL(*current_field, (char *)p, len, 0);
					} else {
						ZVAL_LONG(*current_field, (long) v); /* the cast is safe */
					}
				}
				*(p + len) = save;
			} else if (as_int_or_float && perm_bind.php_type == IS_DOUBLE) {
				zend_uchar save = *(p + len);
				/* We have to make it ASCIIZ temporarily */
				*(p + len) = '\0';
				ZVAL_DOUBLE(*current_field, atof((char *) p));
				*(p + len) = save;
			} else
#endif /* MYSQLND_STRING_TO_INT_CONVERSION */
			if (fields_metadata[i].type == MYSQL_TYPE_BIT) {
				/*
				  BIT fields are specially handled. As they come as bit mask, we have
				  to convert it to human-readable representation. As the bits take
				  less space in the protocol than the numbers they represent, we don't
				  have enough space in the packet buffer to overwrite inside.
				  Thus, a bit more space is pre-allocated at the end of the buffer,
				  see php_mysqlnd_rowp_read(). And we add the strings at the end.
				  Definitely not nice, _hackish_ :(, but works.
				*/
				zend_uchar *start = bit_area;
				ps_fetch_from_1_to_8_bytes(*current_field, &(fields_metadata[i]), 0, &p, len TSRMLS_CC);
				/*
				  We have advanced in ps_fetch_from_1_to_8_bytes. We should go back because
				  later in this function there will be an advancement.
				*/
				p -= len;
				if (Z_TYPE_PP(current_field) == IS_LONG) {
					bit_area += 1 + sprintf((char *)start, "%ld", Z_LVAL_PP(current_field));
					ZVAL_STRINGL(*current_field, (char *) start, bit_area - start - 1, copy_data);
				} else if (Z_TYPE_PP(current_field) == IS_STRING){
					memcpy(bit_area, Z_STRVAL_PP(current_field), Z_STRLEN_PP(current_field));
					bit_area += Z_STRLEN_PP(current_field);
					*bit_area++ = '\0';
					zval_dtor(*current_field);
					ZVAL_STRINGL(*current_field, (char *) start, bit_area - start - 1, copy_data);
				}
			} else {
				ZVAL_STRINGL(*current_field, (char *)p, len, copy_data);
			}
			p += len;
			last_field_was_string = TRUE;
		}
	}
	if (copy_data == FALSE && last_field_was_string) {
		/* Normal queries: The buffer has one more byte at the end, because we need it */
		row_buffer->ptr[data_size] = '\0';
	}

	DBG_RETURN(PASS);
}

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.