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DO NOT MERGE Remove window obscurement information.

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If ACTION_OUTSIDE_EVENTS contain information about whether the touch is
obscured, then a pattern of invisible, untouchable, unfocusable
SYSTEM_ALERT_WINDOWS can be placed across the screen to determine
approximate locations of touch events without the user knowing.

Bug: 31097064
Test: cts-tradefed run cts --class android.security.cts.MotionEventTest
Change-Id: Iebbb68231cbb76f87241201e7640a1fe3e188625
CVE-2017-0860
This commit is contained in:
Siarhei Vishniakou 2017-08-04 12:37:47 -07:00 committed by Ivan Kutepov
parent ea0521baee
commit b2cc7deac7
1 changed files with 1 additions and 8 deletions
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9
services/inputflinger/InputDispatcher.cpp
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@ -1222,15 +1222,8 @@ int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
if (maskedAction == AMOTION_EVENT_ACTION_DOWN
&& (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) {
int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE;
if (isWindowObscuredAtPointLocked(windowHandle, x, y)) {
outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
} else if (isWindowObscuredLocked(windowHandle)) {
outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_PARTIALLY_OBSCURED;
}
mTempTouchState.addOrUpdateWindow(
windowHandle, outsideTargetFlags, BitSet32(0));
windowHandle, InputTarget::FLAG_DISPATCH_AS_OUTSIDE, BitSet32(0));
}
}
}