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SUSE:SLE-15-SP5:GA
libqt5-qtbase.29898
0006-QBezier-Don-t-try-calculating-a-unit-vecto...
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File 0006-QBezier-Don-t-try-calculating-a-unit-vector-when-len.patch of Package libqt5-qtbase.29898
From 6ea73a753c7664bad4a0d30beddfe04747278f9f Mon Sep 17 00:00:00 2001 From: Robert Loehning <robert.loehning@qt.io> Date: Mon, 3 Aug 2020 15:15:30 +0200 Subject: [PATCH 06/11] QBezier: Don't try calculating a unit vector when length is null It's undefined and causes a division by zero. Fixes: oss-fuzz-24273 Change-Id: I3d34d5c43cccff9255abaf87af265ddea3fe6d95 Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io> (cherry picked from commit 7fa5fdae5c4f4c83acb74ff8cd65eacfa567a727) Reviewed-by: hjk <hjk@qt.io> (cherry picked from commit 5cbebeda54c81a182b8581a2d0a7f4b6b00e45f8) --- src/gui/painting/qbezier.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/gui/painting/qbezier.cpp b/src/gui/painting/qbezier.cpp index 65e6063fe4..8964da9d37 100644 --- a/src/gui/painting/qbezier.cpp +++ b/src/gui/painting/qbezier.cpp @@ -301,6 +301,8 @@ static ShiftResult shift(const QBezier *orig, QBezier *shifted, qreal offset, qr QPointF points_shifted[4]; QLineF prev = QLineF(QPointF(), points[1] - points[0]); + if (!prev.length()) + return Discard; QPointF prev_normal = prev.normalVector().unitVector().p2(); points_shifted[0] = points[0] + offset * prev_normal; -- 2.25.1
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