What linux software ?:) Only today make stv090x patch which enable specific TS FIFO Minimum latence mode and this fix Eumetcast VCM reception. Btw STV090xBAC can receive basic service of Eumetcast VCM. STV090xAAC receive both basic and high without errors (need at least snr ~10db for stable reception high service).
No need any application changes, only driver fix (but maybe this fix break reception for some DVB-S2 CCM transponders, so need more test).