/usr/libx32/libubsan.so.0 is in libx32ubsan0 4.9.2-10+deb8u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/libx32/libubsan.so.0.0.0
/usr/libx32/libubsan.so.0.0.0