In ensureSetPipAspectRatioQuotaTracker of ActivityClientController.java, there is a possible way to generate unmovable and undeletable pip windows due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
- https://android.googlesource.com/platform/frameworks/base/+/8b473b3f79642f42eeeffbfe572df6c6cbe9d79e
No PoCs found on GitHub currently.