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GraphicsMagick.8039
GraphicsMagick-buffer-overflow-map.patch
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File GraphicsMagick-buffer-overflow-map.patch of Package GraphicsMagick.8039
Index: GraphicsMagick-1.3.25/coders/map.c =================================================================== --- GraphicsMagick-1.3.25.orig/coders/map.c 2015-10-04 21:35:31.000000000 +0200 +++ GraphicsMagick-1.3.25/coders/map.c 2016-11-29 15:53:54.330024445 +0100 @@ -366,20 +366,20 @@ static unsigned int WriteMAPImage(const if (image->colors <= 256) for (i=0; i < (long) image->colors; i++) { - *q++=image->colormap[i].red; - *q++=image->colormap[i].green; - *q++=image->colormap[i].blue; + *q++=(unsigned char) ScaleQuantumToChar(image->colormap[i].red); + *q++=(unsigned char) ScaleQuantumToChar(image->colormap[i].green); + *q++=(unsigned char) ScaleQuantumToChar(image->colormap[i].blue); } #if QuantumDepth > 8 else for (i=0; i < (long) image->colors; i++) { - *q++=image->colormap[i].red >> 8; - *q++=image->colormap[i].red & 0xff; - *q++=image->colormap[i].green >> 8; - *q++=image->colormap[i].green & 0xff; - *q++=image->colormap[i].blue >> 8; - *q++=image->colormap[i].blue & 0xff; + *q++=(unsigned char) (ScaleQuantumToShort(image->colormap[i].red) >> 8); + *q++=(unsigned char) (ScaleQuantumToShort(image->colormap[i].red) & 0xff); + *q++=(unsigned char) (ScaleQuantumToShort(image->colormap[i].green) >> 8); + *q++=(unsigned char) (ScaleQuantumToShort(image->colormap[i].green) & 0xff);; + *q++=(unsigned char) (ScaleQuantumToShort(image->colormap[i].blue) >> 8); + *q++=(unsigned char) (ScaleQuantumToShort(image->colormap[i].blue) & 0xff); } #endif /* QuantumDepth > 8 */ if (WriteBlob(image,packet_size*image->colors,(char *) colormap) !=
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