{"id":"CVE-2024-56921","details":"An issue was discovered in Open5gs v2.7.2. InitialUEMessage, Registration request sent at a specific time can crash AMF due to incorrect error handling of gmm_state_exception() function upon receipt of the Nausf_UEAuthentication_Authenticate response.","modified":"2026-08-12T15:15:47.635952Z","published":"2025-02-03T00:00:00Z","database_specific":{"cna_assigner":"mitre","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56921.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56921.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56921"},{"type":"REPORT","url":"https://github.com/open5gs/open5gs/issues/3608"},{"type":"FIX","url":"https://github.com/open5gs/open5gs/commit/f780f9af45c27b6f49987d96ba71dedb3dd85840"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/open5gs/open5gs","events":[{"introduced":"43fa4857cce8af6b6ec3c8e3b0cbf99444948f76"},{"fixed":"f780f9af45c27b6f49987d96ba71dedb3dd85840"}],"database_specific":{"extracted_events":[{"introduced":"2.7.2"},{"last_affected":"2.7.2"}],"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:open5gs:open5gs:2.7.2:*:*:*:*:*:*:*"}}],"versions":["2.7.2","v2.7.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56921.json","vanir_signatures_modified":"2026-08-12T15:15:47Z","vanir_signatures":[{"source":"https://github.com/open5gs/open5gs/commit/f780f9af45c27b6f49987d96ba71dedb3dd85840","target":{"file":"src/amf/gmm-sm.c"},"deprecated":false,"digest":{"line_hashes":["329928212348722115459337753229020731516","303401551557704871680702613292621985809","28866856782458372153922604732198695952","74156798815881509603091226286188191154"],"threshold":0.9},"id":"CVE-2024-56921-1156fbde","signature_type":"Line","signature_version":"v1"},{"id":"CVE-2024-56921-ea8114b9","signature_type":"Function","signature_version":"v1","source":"https://github.com/open5gs/open5gs/commit/f780f9af45c27b6f49987d96ba71dedb3dd85840","target":{"file":"src/amf/gmm-sm.c","function":"gmm_state_exception"},"deprecated":false,"digest":{"function_hash":"157547459946615711404643052366168327784","length":5968}}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}