{"id":"PUB-A-227203684", "published":"2022-12-01T00:00:00Z", "modified":"2026-04-30T15:48:46.890647439Z", "aliases":["CVE-2022-20521", "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.", "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":[{"deprecated":false, "digest":{"function_hash":"238553091056856029825788990913744794482", "length":1068}, "id":"PUB-A-227203684-401e6b3b", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/0f98ddca48c98e78ba2720ab25c43d02c87a5027", "target":{"file":"system/stack/sdp/sdp_utils.cc", "function":"sdpu_find_most_specific_service_uuid"}}, {"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"}}]}}], "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"}]}