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SUSE:SLE-12-SP2:GA
ImageMagick.29977
ImageMagick-CVE-2018-16642.patch
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File ImageMagick-CVE-2018-16642.patch of Package ImageMagick.29977
Index: ImageMagick-6.8.8-1/coders/cut.c =================================================================== --- ImageMagick-6.8.8-1.orig/coders/cut.c 2018-09-11 11:52:02.022827506 +0200 +++ ImageMagick-6.8.8-1/coders/cut.c 2018-09-11 11:55:25.523993336 +0200 @@ -94,130 +94,159 @@ typedef struct } CUTPalHeader; -static void InsertRow(ssize_t depth,unsigned char *p,ssize_t y,Image *image) +static MagickBooleanType InsertRow(ssize_t bpp,unsigned char *p,ssize_t y,Image *image) { ExceptionInfo *exception; - size_t bit; ssize_t x; - register PixelPacket *q; - IndexPacket index; - register IndexPacket *indexes; + int + bit; + + ssize_t + x; + + register PixelPacket + *q; + + IndexPacket + index; + + register IndexPacket + *indexes; - index=(IndexPacket) 0; exception=(&image->exception); - switch (depth) - { + q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); + if (q == (PixelPacket *) NULL) + return(MagickFalse); + indexes=GetAuthenticIndexQueue(image); + switch (bpp) + { case 1: /* Convert bitmap scanline. */ { - q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); - if (q == (PixelPacket *) NULL) - break; - indexes=GetAuthenticIndexQueue(image); for (x=0; x < ((ssize_t) image->columns-7); x+=8) - { - for (bit=0; bit < 8; bit++) { - index=(IndexPacket) ((((*p) & (0x80 >> bit)) != 0) ? 0x01 : 0x00); - SetPixelIndex(indexes+x+bit,index); + for (bit=0; bit < 8; bit++) + { + index=((*p) & (0x80 >> bit) ? 0x01 : 0x00); + SetPixelIndex(indexes+x+bit,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; + } + p++; } - p++; - } if ((image->columns % 8) != 0) { - for (bit=0; bit < (image->columns % 8); bit++) + for (bit=0; bit < (ssize_t) (image->columns % 8); bit++) { - index=(IndexPacket) ((((*p) & (0x80 >> bit)) != 0) ? 0x01 : 0x00); + index=((*p) & (0x80 >> bit) ? 0x01 : 0x00); SetPixelIndex(indexes+x+bit,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; } p++; } - if (SyncAuthenticPixels(image,exception) == MagickFalse) - break; break; } case 2: /* Convert PseudoColor scanline. */ { - q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); - if (q == (PixelPacket *) NULL) - break; - indexes=GetAuthenticIndexQueue(image); - for (x=0; x < ((ssize_t) image->columns-1); x+=2) - { + if ((image->storage_class != PseudoClass) || + (indexes == (IndexPacket *) NULL)) + return MagickFalse; + for (x=0; x < ((ssize_t) image->columns-3); x+=4) + { index=ConstrainColormapIndex(image,(*p >> 6) & 0x3); SetPixelIndex(indexes+x,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; index=ConstrainColormapIndex(image,(*p >> 4) & 0x3); SetPixelIndex(indexes+x,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; index=ConstrainColormapIndex(image,(*p >> 2) & 0x3); SetPixelIndex(indexes+x,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; index=ConstrainColormapIndex(image,(*p) & 0x3); SetPixelIndex(indexes+x+1,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; p++; - } - if ((image->columns % 4) != 0) + } + if ((image->columns % 4) != 0) { index=ConstrainColormapIndex(image,(*p >> 6) & 0x3); SetPixelIndex(indexes+x,index); - if ((image->columns % 4) >= 1) - + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; + if ((image->columns % 4) > 1) { index=ConstrainColormapIndex(image,(*p >> 4) & 0x3); SetPixelIndex(indexes+x,index); - if ((image->columns % 4) >= 2) - + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; + if ((image->columns % 4) > 2) { index=ConstrainColormapIndex(image,(*p >> 2) & 0x3); SetPixelIndex(indexes+x,index); - } - } + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; + } + } p++; - } - if (SyncAuthenticPixels(image,exception) == MagickFalse) - break; + } break; - } - + } + case 4: /* Convert PseudoColor scanline. */ { - q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); - if (q == (PixelPacket *) NULL) - break; - indexes=GetAuthenticIndexQueue(image); for (x=0; x < ((ssize_t) image->columns-1); x+=2) { - index=ConstrainColormapIndex(image,(*p >> 4) & 0xf); + index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f); SetPixelIndex(indexes+x,index); - index=ConstrainColormapIndex(image,(*p) & 0xf); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + q++; + index=ConstrainColormapIndex(image,(*p) & 0x0f); SetPixelIndex(indexes+x+1,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); p++; + q++; } if ((image->columns % 2) != 0) { - index=ConstrainColormapIndex(image,(*p >> 4) & 0xf); + index=ConstrainColormapIndex(image,(*p >> 4) & 0x0f); SetPixelIndex(indexes+x,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); p++; + q++; } - if (SyncAuthenticPixels(image,exception) == MagickFalse) - break; break; } case 8: /* Convert PseudoColor scanline. */ { - q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); - if (q == (PixelPacket *) NULL) break; - indexes=GetAuthenticIndexQueue(image); for (x=0; x < (ssize_t) image->columns; x++) - { - index=ConstrainColormapIndex(image,*p); - SetPixelIndex(indexes+x,index); - p++; - } - if (SyncAuthenticPixels(image,exception) == MagickFalse) - break; + { + index=ConstrainColormapIndex(image,*p); + SetPixelIndex(indexes+x,index); + SetPixelRGBO(q,image->colormap+(ssize_t) index); + p++; + q++; + } } break; + case 24: /* Convert DirectColor scanline. */ + for (x=0; x < (ssize_t) image->columns; x++) + { + SetPixelRed(q,ScaleCharToQuantum(*p++)); + SetPixelGreen(q,ScaleCharToQuantum(*p++)); + SetPixelBlue(q,ScaleCharToQuantum(*p++)); + q++; + } + break; } + if (!SyncAuthenticPixels(image,exception)) + return(MagickFalse); + return(MagickTrue); } /*
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