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openSUSE:Step:15-SP4
ImageMagick.22732
ImageMagick-CVE-2020-25664.patch
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File ImageMagick-CVE-2020-25664.patch of Package ImageMagick.22732
Index: ImageMagick-7.0.7-34/coders/png.c =================================================================== --- ImageMagick-7.0.7-34.orig/coders/png.c 2020-12-08 17:30:38.835975421 +0100 +++ ImageMagick-7.0.7-34/coders/png.c 2020-12-08 17:41:06.920228237 +0100 @@ -11361,10 +11361,11 @@ static MagickBooleanType WriteOnePNGImag (void) LogMagickEvent(CoderEvent,GetMagickModule(), " Allocating %.20g bytes of memory for pixels",(double) rowbytes); } - pixel_info=AcquireVirtualMemory(rowbytes,sizeof(*ping_pixels)); + pixel_info=AcquireVirtualMemory(rowbytes+256,sizeof(*ping_pixels)); if (pixel_info == (MemoryInfo *) NULL) png_error(ping,"Allocation of memory for pixels failed"); ping_pixels=(unsigned char *) GetVirtualMemoryBlob(pixel_info); + (void) memset(ping_pixels,0,(rowbytes+256)*sizeof(*ping_pixels)); /* Initialize image scanlines. */
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