/usr/powerpc64-linux-gnu/lib/libasan.so.2 is in libasan2-ppc64-cross 5.5.0-12ubuntu1cross1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/powerpc64-linux-gnu/lib/libasan.so.2.0.0
/usr/powerpc64-linux-gnu/lib/libasan.so.2.0.0