Those directories hold the installed Perl system and should be 0755 for directories and 0644 for files. I believe that chown a+rX -R `perl -e 'print(join("\n", @INC))'` at a root prompt should fix it. The root cause was probably a bad umask value while updating Perl modules.
Those permissions are not overblown at all — most of the system should be accessible to all users.
In reply to Re^3: Issue with @INC
by jcb
in thread Issue with @INC
by sidmuchrock
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