From c97df0d704bfa5eebe573386445abfa4dcfd95b8 Mon Sep 17 00:00:00 2001
From: Caolán McNamara <caolanm@redhat.com>
Date: Sat, 28 Jul 2018 16:06:14 +0100
Subject: ofz#9613 Integer-overflow in shadow multiplication
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Change-Id: I1c7dda7391987ea7bf5aa841aab576af0fc3759e
Reviewed-on: https://gerrit.libreoffice.org/58219
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
---
 editeng/source/items/frmitems.cxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'editeng')

diff --git a/editeng/source/items/frmitems.cxx b/editeng/source/items/frmitems.cxx
index 951a19fc77b3..f66dfff63a63 100644
--- a/editeng/source/items/frmitems.cxx
+++ b/editeng/source/items/frmitems.cxx
@@ -84,6 +84,7 @@
 #include <editeng/editerr.hxx>
 #include <libxml/xmlwriter.h>
 #include <o3tl/enumrange.hxx>
+#include <o3tl/safeint.hxx>
 #include <vcl/GraphicLoader.hxx>
 
 using namespace ::editeng;
@@ -1127,10 +1128,10 @@ bool SvxShadowItem::PutValue( const uno::Any& rVal, sal_uInt8 nMemberId )
         case MID_SHADOW_TRANSPARENCE:
         {
             sal_Int32 nTransparence = 0;
-            if (rVal >>= nTransparence)
+            if ((rVal >>= nTransparence) && !o3tl::checked_multiply<sal_Int32>(nTransparence, 255, nTransparence))
             {
                 Color aColor(aShadow.Color);
-                aColor.SetTransparency(rtl::math::round(float(nTransparence * 255) / 100));
+                aColor.SetTransparency(rtl::math::round(float(nTransparence) / 100));
                 aShadow.Color = sal_Int32(aColor);
             }
             break;
-- 
cgit