{"id":"ASB-A-205130886","details":"In createPresentationContext of Presentation.java, there is a possible way to start a foreground activity from background due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.","aliases":["A-205130886","CVE-2021-39758"],"modified":"2026-09-18T15:47:37.392928379Z","published":"2022-10-01T00:00:00Z","references":[{"type":"ADVISORY","url":"https://source.android.com/security/bulletin/2022-10-01"},{"type":"FIX","url":"https://android.googlesource.com/platform/frameworks/base/+/8e4efdb653ed38a6b9c3d306208557352d52cbd5"}],"affected":[{"package":{"name":"platform/frameworks/base","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10:0"},{"fixed":"10:2022-10-01"}]}],"versions":["10"],"ecosystem_specific":{"severity":"Moderate","spl":"2022-10-01","types":["EoP"],"vanir_signatures":[{"signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/c97296e9d9d2bad7bdd2d34c9428ba5f092fa8c1","target":{"file":"services/core/java/com/android/server/wm/RootWindowContainer.java"},"deprecated":false,"digest":{"line_hashes":["29840440586258169693462454076158925556","213396486038452831278377549094169843602","228445899389099079593691071735995055390","251578245069968599296638591181347011752","333900397814330802755872188782388426748","73164140829396596013584142068435983733","57908055369602442342969322100064423101","322529904216023784252135970667632781390","9750100643542470922863240679374362718","333122694766293271160191850213446839841","75798385379077713637207440080716134025"],"threshold":0.9},"id":"ASB-A-205130886-20dedc0b"},{"id":"ASB-A-205130886-adba426d","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/c97296e9d9d2bad7bdd2d34c9428ba5f092fa8c1","target":{"file":"services/core/java/com/android/server/wm/RootWindowContainer.java","function":"isAnyNonToastWindowVisibleForUid"},"deprecated":false,"digest":{"function_hash":"118031723022519068736264188622598971298","length":199}}],"fixes":["https://android.googlesource.com/platform/frameworks/base/+/c97296e9d9d2bad7bdd2d34c9428ba5f092fa8c1"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-205130886.json"}},{"package":{"name":"platform/frameworks/base","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"11:0"},{"fixed":"11:2022-10-01"}]}],"versions":["11"],"ecosystem_specific":{"vanir_signatures":[{"signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/778191bdf21661b41030f9308e095c0445dec33c","target":{"function":"isNonToastOrStarting","file":"services/core/java/com/android/server/wm/WindowState.java"},"deprecated":false,"digest":{"length":105,"function_hash":"309892185118692997003263110580644362314"},"id":"ASB-A-205130886-353bac28","signature_type":"Function"},{"digest":{"line_hashes":["10313335488045220910035931167300170355","261372803265082561517492750361881604635","278399851811985462604047126646984147638","75641407910770251937695312410220914176","50169372483916373397872568910188853356","99847271758102256908039258320305980609","206496492593111140008101430373728818789","295136802722067114420916440743897339347","327629897799297319038583944539384123633","121227489019215725058657148439372717846","170590786134876909076710201705065516382"],"threshold":0.9},"id":"ASB-A-205130886-fb44b63e","signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/778191bdf21661b41030f9308e095c0445dec33c","target":{"file":"services/core/java/com/android/server/wm/WindowState.java"},"deprecated":false}],"fixes":["https://android.googlesource.com/platform/frameworks/base/+/778191bdf21661b41030f9308e095c0445dec33c"],"severity":"Moderate","spl":"2022-10-01","types":["EoP"]},"database_specific":{"source":"https://storage.googleapis.com/android-osv/ASB-A-205130886.json"}},{"package":{"name":"platform/frameworks/base","ecosystem":"Android"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"12:0"},{"fixed":"12:2022-10-01"}]}],"versions":["12"],"ecosystem_specific":{"severity":"Moderate","spl":"2022-10-01","types":["EoP"],"vanir_signatures":[{"signature_type":"Line","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/88e98e0a853f7530d61aab13dea2bfc9792e3f32","target":{"file":"services/core/java/com/android/server/wm/WindowState.java"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["332816131073195698316323346625055011373","248018738654998027143918272432072286269","171592344151606292867477664931624942558","94859399021469200881821990861703741625"]},"id":"ASB-A-205130886-14eb8a35"},{"id":"ASB-A-205130886-7363d6c3","signature_type":"Function","signature_version":"v1","source":"https://android.googlesource.com/platform/frameworks/base/+/88e98e0a853f7530d61aab13dea2bfc9792e3f32","target":{"function":"onSurfaceShownChanged","file":"services/core/java/com/android/server/wm/WindowState.java"},"deprecated":false,"digest":{"function_hash":"237856969500410895529135917091395492974","length":520}}],"fixes":["https://a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