{"id":"PUB-A-227203684","details":"In sdpu_find_most_specific_service_uuid of sdp_utils.cc, there is a possible way to crash Bluetooth due to a missing null check. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation.","aliases":["A-227203684","CVE-2022-20521"],"modified":"2026-09-21T16:00:45.521740994Z","published":"2022-12-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2022-12-01"},{"type":"FIX","url":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/0f98ddca48c98e78ba2720ab25c43d02c87a5027"}],"affected":[{"package":{"name":"platform/packages/modules/Bluetooth","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13:0"},{"fixed":"13:2022-12-01"}]}],"versions":["13"],"ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/0f98ddca48c98e78ba2720ab25c43d02c87a5027"],"severity":"Moderate","spl":"2022-12-01","types":["DoS"],"vanir_signatures":[{"id":"PUB-A-227203684-401e6b3b","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/0f98ddca48c98e78ba2720ab25c43d02c87a5027","target":{"function":"sdpu_find_most_specific_service_uuid","file":"system/stack/sdp/sdp_utils.cc"},"deprecated":false,"digest":{"function_hash":"238553091056856029825788990913744794482","length":1068}},{"deprecated":false,"digest":{"line_hashes":["160116732034253777826207962760279679938","18908339239817071240172786701048238448","297454108314900748288197999731715647218","75244885949787698298913282795963398807","321621315134737476890260724131816370360","20965748284632994148210757705938643173","164467874120547922754436432331549304198","296892172092946899309059415897789938893","135290251693880790664240529785615635191"],"threshold":0.9},"id":"PUB-A-227203684-a951188c","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/0f98ddca48c98e78ba2720ab25c43d02c87a5027","target":{"file":"system/stack/sdp/sdp_utils.cc"}}]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-227203684.json"}}],"schema_version":"1.9.0"}