As per $summary, I see denied RWX mprotect of /opt/Adobe/flash-player/plugin/libflashplayer.so by /usr/bin/xxxterm in my grsec.log Disabling mprotect with -m it does not show any warnings. So, xxxterm have not integration with flashplayer and I don't know where out this warning. CC'ing hardened.
Package www-client/xxxterm removed (see bug #417555). Marked as WONTFIX.
My bad, bug is still valid. Renamed to www-client/xombrero as that is www-client/xxxterm's new name.
commit a39883d855635a828669996d7fa0fcd722d85db8 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: Sat Jul 1 11:16:03 2017 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: Sat Jul 1 11:20:03 2017 www-client/xombrero: Remove last-rited pkg, #608626