In VerifyNoOverlapInSessions of apexd.cpp, there is a possible way to block security updates due to a logic error in the code. This could l…

In VerifyNoOverlapInSessions of apexd.cpp, there is a possible way to block security updates 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.