{"id":"ASB-A-242535997", "published":"2023-03-01T00:00:00Z", "modified":"2026-04-29T15:10:00.007170452Z", "aliases":["CVE-2023-20931", "A-242535997"], "details":"In avdt_scb_hdl_write_req of avdt_scb_act.cc, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.", "affected":[{"package":{"name":"platform/packages/modules/Bluetooth", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"13-next:0"}, {"fixed":"13-next:2023-03-01"}]}], "versions":["13-next"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/be058b1eb979599c7d515463a1e9f7ec1b2344c4"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"line_hashes":["144940686777104710571966521297968008422", "219232503302018254571802627114048278085", "269556321489143915640961737916683630537", "46125424436412511154327772841996970179"], "threshold":0.9}, "id":"ASB-A-242535997-6572e876", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/be058b1eb979599c7d515463a1e9f7ec1b2344c4", "target":{"file":"system/stack/avdt/avdt_scb_act.cc"}}, {"deprecated":false, "digest":{"function_hash":"21316893359240151507608382100880029294", "length":925}, "id":"ASB-A-242535997-bc283278", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/be058b1eb979599c7d515463a1e9f7ec1b2344c4", "target":{"file":"system/stack/avdt/avdt_scb_act.cc", "function":"avdt_scb_hdl_write_req"}}]}}, {"package":{"name":"platform/system/bt", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"11:0"}, {"fixed":"11:2023-03-01"}]}], "versions":["11"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/system/bt/+/eca4a3cdb0da240496341f546a57397434ec85dd"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"function_hash":"21316893359240151507608382100880029294", "length":925}, "id":"ASB-A-242535997-a9ab0d67", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/platform/system/bt/+/eca4a3cdb0da240496341f546a57397434ec85dd", "target":{"file":"stack/avdt/avdt_scb_act.cc", "function":"avdt_scb_hdl_write_req"}}, {"deprecated":false, "digest":{"line_hashes":["144940686777104710571966521297968008422", "219232503302018254571802627114048278085", "269556321489143915640961737916683630537", "46125424436412511154327772841996970179"], "threshold":0.9}, "id":"ASB-A-242535997-db40fffd", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/system/bt/+/eca4a3cdb0da240496341f546a57397434ec85dd", "target":{"file":"stack/avdt/avdt_scb_act.cc"}}]}}, {"package":{"name":"platform/packages/modules/Bluetooth", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"13:0"}, {"fixed":"13:2023-03-01"}]}], "versions":["13"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/789d4bc617da23dc86d288c53c80a242d3a6850f"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"function_hash":"21316893359240151507608382100880029294", "length":925}, "id":"ASB-A-242535997-ae3001ab", "signature_type":"Function", "signature_version":"v1", "source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/789d4bc617da23dc86d288c53c80a242d3a6850f", "target":{"file":"system/stack/avdt/avdt_scb_act.cc", "function":"avdt_scb_hdl_write_req"}}, {"deprecated":false, "digest":{"line_hashes":["144940686777104710571966521297968008422", "219232503302018254571802627114048278085", "269556321489143915640961737916683630537", "46125424436412511154327772841996970179"], "threshold":0.9}, "id":"ASB-A-242535997-ee4fddd8", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/789d4bc617da23dc86d288c53c80a242d3a6850f", "target":{"file":"system/stack/avdt/avdt_scb_act.cc"}}]}}], "references":[{"type":"ADVISORY", "url":"https://source.android.com/security/bulletin/2023-03-01"}, {"type":"FIX", "url":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/789d4bc617da23dc86d288c53c80a242d3a6850f"}]}