{"id":"PUB-A-255305114","details":"In btm_ble_process_periodic_adv_sync_lost_evt of ble_scanner_hci_interface.cc , there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-255305114","CVE-2023-20991"],"modified":"2026-09-21T16:00:45.521740994Z","published":"2023-06-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2023-06-01"}],"affected":[{"package":{"name":"platform/packages/modules/Bluetooth","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13-next:0"},{"fixed":"13-next:2023-06-01"}]}],"versions":["13-next"],"ecosystem_specific":{"spl":"2023-06-01","types":["ID"],"vanir_signatures":[{"target":{"file":"system/stack/btm/ble_scanner_hci_interface.cc"},"deprecated":false,"digest":{"line_hashes":["126293545435270076367963561081937909340","235988437675959267100525130936193460565","93385601713951595456171969397712910026"],"threshold":0.9},"id":"PUB-A-255305114-44964580","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/6d0884df95f251977b8ffbca912b90ebfbcb83d2"},{"id":"PUB-A-255305114-b11f0acb","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/6d0884df95f251977b8ffbca912b90ebfbcb83d2","target":{"file":"system/stack/btm/ble_scanner_hci_interface.cc","function":"btm_ble_process_periodic_adv_sync_lost_evt"},"deprecated":false,"digest":{"length":241,"function_hash":"235667980479841068112594725593059873565"}}],"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/6d0884df95f251977b8ffbca912b90ebfbcb83d2"],"severity":"Moderate"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-255305114.json"}},{"package":{"name":"platform/packages/modules/Bluetooth","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13:0"},{"fixed":"13:2023-06-01"}]}],"versions":["13"],"ecosystem_specific":{"types":["ID"],"vanir_signatures":[{"deprecated":false,"digest":{"function_hash":"235667980479841068112594725593059873565","length":241},"id":"PUB-A-255305114-3667a2fc","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/85188d000ae001f7ec4517a7401b7c54820d88a1","target":{"function":"btm_ble_process_periodic_adv_sync_lost_evt","file":"system/stack/btm/ble_scanner_hci_interface.cc"}},{"source":"https://android.googlesource.com/platform/packages/modules/Bluetooth/+/85188d000ae001f7ec4517a7401b7c54820d88a1","target":{"file":"system/stack/btm/ble_scanner_hci_interface.cc"},"deprecated":false,"digest":{"line_hashes":["126293545435270076367963561081937909340","235988437675959267100525130936193460565","93385601713951595456171969397712910026"],"threshold":0.9},"id":"PUB-A-255305114-83ccf124","signature_type":"Line","signature_version":"v1"}],"fixes":["https://android.googlesource.com/platform/packages/modules/Bluetooth/+/85188d000ae001f7ec4517a7401b7c54820d88a1"],"severity":"Moderate","spl":"2023-06-01"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-255305114.json"}}],"schema_version":"1.9.0"}