SriLankan Airlines' "UL" code is now displayed on Malaysia Airlines' service to Seoul. However, per GDS timetable display, this appears to be one-way codeshare.

Codeshare list is the following:

Route UL Codeshare MH Operating

Kuala Lumpur - Seoul UL2366 MH066

Kuala Lumpur - Kota Kinabalu - Seoul UL2364 MH064