/usr/include/CGAL/Arr_geometry_traits/ is in libcgal-dev 4.7-4.
This file is owned by root:root, with mode 0o755.
..
/usr/include/CGAL/Arr_geometry_traits/Arr_plane_3.h
/usr/include/CGAL/Arr_geometry_traits/Bezier_bounding_rational_traits.h
/usr/include/CGAL/Arr_geometry_traits/Bezier_cache.h
/usr/include/CGAL/Arr_geometry_traits/Bezier_curve_2.h
/usr/include/CGAL/Arr_geometry_traits/Bezier_point_2.h
/usr/include/CGAL/Arr_geometry_traits/Bezier_x_monotone_2.h
/usr/include/CGAL/Arr_geometry_traits/Circle_segment_2.h
/usr/include/CGAL/Arr_geometry_traits/Conic_arc_2.h
/usr/include/CGAL/Arr_geometry_traits/Conic_intersections_2.h
/usr/include/CGAL/Arr_geometry_traits/Conic_point_2.h
/usr/include/CGAL/Arr_geometry_traits/Conic_x_monotone_arc_2.h
/usr/include/CGAL/Arr_geometry_traits/Consolidated_curve_data_aux.h
/usr/include/CGAL/Arr_geometry_traits/Curve_data_aux.h
/usr/include/CGAL/Arr_geometry_traits/Hyperbolic_arc_2.h
/usr/include/CGAL/Arr_geometry_traits/Polycurve_2.h
/usr/include/CGAL/Arr_geometry_traits/Polyline_2.h
/usr/include/CGAL/Arr_geometry_traits/Rational_arc_2.h
/usr/include/CGAL/Arr_geometry_traits/Segment_assertions.h
/usr/include/CGAL/Arr_geometry_traits/de_Casteljau_2.h