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SUSE:SLE-12-SP4:GA
ImageMagick
ImageMagick-CVE-2020-27762.patch
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File ImageMagick-CVE-2020-27762.patch of Package ImageMagick
diff --git a/coders/hdr.c b/coders/hdr.c index ab02f8e52..77e3c6336 100644 --- a/coders/hdr.c +++ b/coders/hdr.c @@ -786,9 +786,12 @@ static MagickBooleanType WriteHDRImage(const ImageInfo *image_info,Image *image) exponent; gamma=frexp(gamma,&exponent)*256.0/gamma; - pixel[0]=(unsigned char) (gamma*QuantumScale*GetPixelRed(p)); - pixel[1]=(unsigned char) (gamma*QuantumScale*GetPixelGreen(p)); - pixel[2]=(unsigned char) (gamma*QuantumScale*GetPixelBlue(p)); + if (GetPixelRed(p) > 0) + pixel[0]=(unsigned char) (gamma*QuantumScale*GetPixelRed(p)); + if (GetPixelGreen(p) > 0) + pixel[1]=(unsigned char) (gamma*QuantumScale*GetPixelGreen(p)); + if (GetPixelBlue(p) > 0) + pixel[2]=(unsigned char) (gamma*QuantumScale*GetPixelBlue(p)); pixel[3]=(unsigned char) (exponent+128); } if ((image->columns >= 8) && (image->columns <= 0x7ffff))
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