{"id":"CVE-2023-20939","aliases":["A-243362981","ASB-A-243362981","EUVD-2023-25107","GHSA-q6x6-wrp8-56vh"],"status":"published","title":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory...","description":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-243362981","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00072,"percentile":0.00049,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-667"],"published":"2023-02-01T00:00:00Z","modified":"2026-11-05T16:32:28Z","fixes":[{"ecosystem":"Android","package":"platform/system/connectivity/wificond","fixed_in":["12:2023-02-01","12L:2023-02-01","13:2023-02-01"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":"platform/system/connectivity/wificond","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12:0"},{"fixed":"12:2023-02-01"}]}],"versions":["12"]},{"source":"osv","ecosystem":"Android","package":"platform/system/connectivity/wificond","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12L:0"},{"fixed":"12L:2023-02-01"}]}],"versions":["12L"]},{"source":"osv","ecosystem":"Android","package":"platform/system/connectivity/wificond","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"13:0"},{"fixed":"13:2023-02-01"}]}],"versions":["13"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2023-02-01","tags":["x_transferred","Patch","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-20939"},{"url":"https://github.com/advisories/GHSA-q6x6-wrp8-56vh"},{"url":"https://android.googlesource.com/platform/system/connectivity/wificond/+/192f1dd4fb5978850851b1a7900cbb4168b6749e","tags":["fix"]}],"sources":{"cve":[{"id":"CVE-2023-20939","description":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-243362981","status":"published","published":"2023-02-28T00:00:00Z","modified":"2025-03-21T17:58:24.037Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:35:13.912858Z"}],"euvd":[{"id":"EUVD-2023-25107","description":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-243362981","status":"published","published":"2023-02-28T00:00:00Z","modified":"2025-03-21T17:58:24Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:56.049523Z"}],"ghsa":[{"id":"GHSA-q6x6-wrp8-56vh","title":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory...","description":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-243362981","status":"published","published":"2023-02-28T18:30:18Z","modified":"2023-03-06T21:30:19Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:54:16.644116Z"}],"nvd":[{"id":"CVE-2023-20939","description":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-12 Android-12L Android-13Android ID: A-243362981","status":"published","published":"2023-02-28T17:15:10.807Z","modified":"2026-06-17T05:31:15.42Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-667"],"updated_at":"2026-11-02T14:07:47.623983Z"}],"osv":[{"id":"ASB-A-243362981","description":"In multiple functions of looper_backed_event_loop.cpp, there is a possible way to corrupt memory due to improper locking. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2023-02-01T00:00:00Z","modified":"2026-11-10T17:02:23.040266809Z","updated_at":"2026-11-10T17:35:05.865114Z"}]}}