status_t Camera2Client::lock() {
    ATRACE_CALL();
    ALOGV("%s: E", __FUNCTION__);
 Mutex::Autolock icl(mBinderSerializationLock);
    ALOGV("%s: Camera %d: Lock call from pid %d; current client pid %d",
            __FUNCTION__, mCameraId, getCallingPid(), mClientPid);

 if (mClientPid == 0) {
        mClientPid = getCallingPid();
 return OK;
 }

 if (mClientPid != getCallingPid()) {
        ALOGE("%s: Camera %d: Lock call from pid %d; currently locked to pid %d",
                __FUNCTION__, mCameraId, getCallingPid(), mClientPid);
 return EBUSY;
 }

 return OK;
}

This category addresses vulnerabilities caused by flawed access control mechanisms, where incorrect permission settings allow unauthorized users to access restricted resources.