In osmo-iuh from 0.1.0 through 1.8.0 a reachable assertion was found in the ranap_handle_co_dt() function via a arbitrarily sized NAS-PDU that leads to process crash and remote denial of service.
https://cgit.osmocom.org/osmo-iuh/commit/?id=f06967126f486bcb185ccf3d1a8f9bc02c4da1f6