/usr/share/perl5/ is in libcache-perl 2.09-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Cache/
/usr/share/perl5/Cache/Memory.pm
/usr/share/perl5/Cache/File.pm
/usr/share/perl5/Cache/Memory/
/usr/share/perl5/Cache/Memory/HeapElem.pm
/usr/share/perl5/Cache/Memory/Entry.pm
/usr/share/perl5/Cache/IOString.pm
/usr/share/perl5/Cache/RemovalStrategy.pm
/usr/share/perl5/Cache/File/
/usr/share/perl5/Cache/File/Handle.pm
/usr/share/perl5/Cache/File/Heap.pm
/usr/share/perl5/Cache/File/Entry.pm
/usr/share/perl5/Cache/Tester.pm
/usr/share/perl5/Cache/Null.pm
/usr/share/perl5/Cache/Null/
/usr/share/perl5/Cache/Null/Entry.pm
/usr/share/perl5/Cache/Entry.pm
/usr/share/perl5/Cache/RemovalStrategy/
/usr/share/perl5/Cache/RemovalStrategy/LRU.pm
/usr/share/perl5/Cache/RemovalStrategy/FIFO.pm
/usr/share/perl5/Cache.pm