/usr/share/perl5/ is in libcache-cache-perl 1.06-2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Cache/
/usr/share/perl5/Cache/Object.pm
/usr/share/perl5/Cache/MemoryCache.pm
/usr/share/perl5/Cache/SizeAwareMemoryCache.pm
/usr/share/perl5/Cache/SizeAwareCacheTester.pm
/usr/share/perl5/Cache/Cache.pm
/usr/share/perl5/Cache/FileCache.pm
/usr/share/perl5/Cache/CacheUtils.pm
/usr/share/perl5/Cache/SizeAwareFileCache.pm
/usr/share/perl5/Cache/MemoryBackend.pm
/usr/share/perl5/Cache/SizeAwareSharedMemoryCache.pm
/usr/share/perl5/Cache/CacheMetaData.pm
/usr/share/perl5/Cache/CacheSizer.pm
/usr/share/perl5/Cache/BaseCache.pm
/usr/share/perl5/Cache/FileBackend.pm
/usr/share/perl5/Cache/BaseCacheTester.pm
/usr/share/perl5/Cache/SizeAwareCache.pm
/usr/share/perl5/Cache/SharedMemoryBackend.pm
/usr/share/perl5/Cache/SharedMemoryCache.pm
/usr/share/perl5/Cache/CacheTester.pm
/usr/share/perl5/Cache/NullCache.pm