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home:dirkmueller:acdc:as_python3_module
ImageMagick.30356
ImageMagick-CVE-2021-20311.patch
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File ImageMagick-CVE-2021-20311.patch of Package ImageMagick.30356
Index: ImageMagick-7.0.7-34/MagickCore/colorspace.c =================================================================== --- ImageMagick-7.0.7-34.orig/MagickCore/colorspace.c 2021-04-15 14:21:37.287436553 +0200 +++ ImageMagick-7.0.7-34/MagickCore/colorspace.c 2021-04-15 14:22:17.251661925 +0200 @@ -673,15 +673,15 @@ static MagickBooleanType sRGBTransformIm if (logmap == (Quantum *) NULL) ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", image->filename); - black=pow(10.0,(reference_black-reference_white)*(gamma/density)*0.002/ - film_gamma); + black=pow(10.0,(reference_black-reference_white)*(gamma/density)*0.002* + PerceptibleReciprocal(film_gamma)); #if defined(MAGICKCORE_OPENMP_SUPPORT) #pragma omp parallel for schedule(static) #endif for (i=0; i <= (ssize_t) MaxMap; i++) logmap[i]=ScaleMapToQuantum((double) (MaxMap*(reference_white+ - log10(black+(1.0*i/MaxMap)*(1.0-black))/((gamma/density)*0.002/ - film_gamma))/1024.0)); + log10(black+(1.0*i/MaxMap)*(1.0-black))/((gamma/density)*0.002* + PerceptibleReciprocal(film_gamma)))/1024.0)); image_view=AcquireAuthenticCacheView(image,exception); #if defined(MAGICKCORE_OPENMP_SUPPORT) #pragma omp parallel for schedule(static) shared(status) \ @@ -2146,14 +2146,14 @@ static MagickBooleanType TransformsRGBIm if (logmap == (Quantum *) NULL) ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed", image->filename); - black=pow(10.0,(reference_black-reference_white)*(gamma/density)*0.002/ - film_gamma); + black=pow(10.0,(reference_black-reference_white)*(gamma/density)*0.002* + PerceptibleReciprocal(film_gamma)); for (i=0; i <= (ssize_t) (reference_black*MaxMap/1024.0); i++) logmap[i]=(Quantum) 0; for ( ; i < (ssize_t) (reference_white*MaxMap/1024.0); i++) logmap[i]=ClampToQuantum(QuantumRange/(1.0-black)* - (pow(10.0,(1024.0*i/MaxMap-reference_white)*(gamma/density)*0.002/ - film_gamma)-black)); + (pow(10.0,(1024.0*i/MaxMap-reference_white)*(gamma/density)*0.002* + PerceptibleReciprocal(film_gamma))-black)); for ( ; i <= (ssize_t) MaxMap; i++) logmap[i]=QuantumRange; if (image->storage_class == PseudoClass)
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