static Image *ReadMVGImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
#define BoundingBox  "viewbox"

  DrawInfo
    *draw_info;

  Image
    *image;

  MagickBooleanType
    status;

  /*
    Open image.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickSignature);
  if (image_info->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
      image_info->filename);
  assert(exception != (ExceptionInfo *) NULL);
  assert(exception->signature == MagickSignature);
  image=AcquireImage(image_info);
  status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
  if (status == MagickFalse)
    {
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  if ((image->columns == 0) || (image->rows == 0))
    {
      char
        primitive[MaxTextExtent];

      register char
        *p;

      SegmentInfo
        bounds;

      /*
        Determine size of image canvas.
      */
      while (ReadBlobString(image,primitive) != (char *) NULL)
      {
        for (p=primitive; (*p == ' ') || (*p == '\t'); p++) ;
        if (LocaleNCompare(BoundingBox,p,strlen(BoundingBox)) != 0)
          continue;
        (void) sscanf(p,"viewbox %lf %lf %lf %lf",&bounds.x1,&bounds.y1,
          &bounds.x2,&bounds.y2);
        image->columns=(size_t) floor((bounds.x2-bounds.x1)+0.5);
        image->rows=(size_t) floor((bounds.y2-bounds.y1)+0.5);
        break;
      }
    }
  if ((image->columns == 0) || (image->rows == 0))
    ThrowReaderException(OptionError,"MustSpecifyImageSize");
  draw_info=CloneDrawInfo(image_info,(DrawInfo *) NULL);
  draw_info->affine.sx=image->x_resolution == 0.0 ? 1.0 : image->x_resolution/
    DefaultResolution;
  draw_info->affine.sy=image->y_resolution == 0.0 ? 1.0 : image->y_resolution/
     DefaultResolution;
   image->columns=(size_t) (draw_info->affine.sx*image->columns);
   image->rows=(size_t) (draw_info->affine.sy*image->rows);
  status=SetImageExtent(image,image->columns,image->rows);
  if (status == MagickFalse)
    {
      InheritException(exception,&image->exception);
      return(DestroyImageList(image));
    }
   if (SetImageBackgroundColor(image) == MagickFalse)
     {
       InheritException(exception,&image->exception);
      image=DestroyImageList(image);
      return((Image *) NULL);
    }
  /*
    Render drawing.
  */
  if (GetBlobStreamData(image) == (unsigned char *) NULL)
    draw_info->primitive=FileToString(image->filename,~0UL,exception);
  else
    {
      draw_info->primitive=(char *) AcquireMagickMemory(GetBlobSize(image)+1);
      if (draw_info->primitive != (char *) NULL)
        {
          CopyMagickMemory(draw_info->primitive,GetBlobStreamData(image),
            GetBlobSize(image));
          draw_info->primitive[GetBlobSize(image)]='\0';
        }
     }
  (void) DrawImage(image,draw_info);
  draw_info=DestroyDrawInfo(draw_info);
  (void) CloseBlob(image);
  return(GetFirstImageInList(image));
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.