vcl/source/outdev/bitmap.cxx | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
New commits:
commit 99e3ab6effa9356a1a444160e60ed8df099b15a3
Author: Armin Le Grand <armin.le.gr...@cib.de>
Date: Mon Nov 9 14:00:50 2015 +0100
tdf#95481 catch out-of-range access in vcl bitmap
blendBitmap24 assumes bitmap is 2 lines high for doing
interpolation. For bitmaps of height 1, really nothing to interpolate
there. Fix cornercase by 'blending' between the very same line instead.
Change-Id: I9b94000aa563e525d0bb2418346ad2c86af26df8
Reviewed-on: https://gerrit.libreoffice.org/19863
Tested-by: Jenkins <c...@libreoffice.org>
Reviewed-by: Norbert Thiebaud <nthieb...@gmail.com>
diff --git a/vcl/source/outdev/bitmap.cxx b/vcl/source/outdev/bitmap.cxx
index a2e30aa..adddcaa 100644
--- a/vcl/source/outdev/bitmap.cxx
+++ b/vcl/source/outdev/bitmap.cxx
@@ -810,11 +810,13 @@ public:
const long nMapY = mpMapY[nY];
const long nMapFY = mpMapYOffset[nY];
- pLine0 = pSource->GetScanline(nMapY);
- pLine1 = pSource->GetScanline(nMapY + 1);
+ pLine0 = pSource->GetScanline(nMapY);
+ // tdf#95481 guard nMapY + 1 to be within bounds
+ pLine1 = (nMapY + 1 < pSource->Height()) ?
pSource->GetScanline(nMapY + 1) : pLine0;
pLineAlpha0 = pSourceAlpha->GetScanline(nMapY);
- pLineAlpha1 = pSourceAlpha->GetScanline(nMapY + 1);
+ // tdf#95481 guard nMapY + 1 to be within bounds
+ pLineAlpha1 = (nMapY + 1 < pSourceAlpha->Height()) ?
pSourceAlpha->GetScanline(nMapY + 1) : pLineAlpha0;
pDestScanline = pDestination->GetScanline(nY);
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