{"id":"PUB-A-200251074","details":"In delete_protocol of main.c, there is a possible arbitrary code execution due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-200251074","CVE-2021-39681"],"modified":"2026-09-21T16:00:45.521740994Z","published":"2022-01-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2022-01-01"}],"affected":[{"package":{"name":":unknown:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"pi:0"},{"fixed":"pi:2022-01-05"}]}],"versions":["pi"],"ecosystem_specific":{"severity":"Moderate","spl":"2022-01-05","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-200251074.json"}},{"package":{"name":":unknown:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"qt:0"},{"fixed":"qt:2022-01-05"}]}],"versions":["qt"],"ecosystem_specific":{"spl":"2022-01-05","types":["EoP"],"severity":"Moderate"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-200251074.json"}},{"package":{"name":":unknown:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"rvc:0"},{"fixed":"rvc:2022-01-05"}]}],"versions":["rvc"],"ecosystem_specific":{"severity":"Moderate","spl":"2022-01-05","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-200251074.json"}},{"package":{"name":":unknown:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"rvc-qpr:0"},{"fixed":"rvc-qpr:2022-01-05"}]}],"versions":["rvc-qpr"],"ecosystem_specific":{"severity":"Moderate","spl":"2022-01-05","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-200251074.json"}},{"package":{"name":":unknown:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"sc:0"},{"fixed":"sc:2022-01-05"}]}],"versions":["sc"],"ecosystem_specific":{"severity":"Moderate","spl":"2022-01-05","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-200251074.json"}},{"package":{"name":":unknown:","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"sc-v2:0"},{"fixed":"sc-v2:2022-01-05"}]}],"versions":["sc-v2"],"ecosystem_specific":{"spl":"2022-01-05","types":["EoP"],"severity":"Moderate"},"database_specific":{"source":"https://storage.googleapis.com/android-osv/PUB-A-200251074.json"}}],"schema_version":"1.9.0"}