static void WriteDDSInfo(Image *image, const size_t pixelFormat,
  const size_t compression, const size_t mipmaps)
{
  char
    software[MaxTextExtent];

  register ssize_t
    i;

  unsigned int
    format,
    caps,
    flags;

  flags=(unsigned int) (DDSD_CAPS | DDSD_WIDTH | DDSD_HEIGHT |
    DDSD_PIXELFORMAT | DDSD_LINEARSIZE);
  caps=(unsigned int) DDSCAPS_TEXTURE;
  format=(unsigned int) pixelFormat;

  if (mipmaps > 0)
    {
      flags=flags | (unsigned int) DDSD_MIPMAPCOUNT;
      caps=caps | (unsigned int) (DDSCAPS_MIPMAP | DDSCAPS_COMPLEX);
    }

  if (format != DDPF_FOURCC && image->matte)
    format=format | DDPF_ALPHAPIXELS;

  (void) WriteBlob(image,4,(unsigned char *) "DDS ");
  (void) WriteBlobLSBLong(image,124);
  (void) WriteBlobLSBLong(image,flags);
  (void) WriteBlobLSBLong(image,image->rows);
  (void) WriteBlobLSBLong(image,image->columns);

  if (compression == FOURCC_DXT1)
    (void) WriteBlobLSBLong(image,
             (unsigned int) (Max(1,(image->columns+3)/4) * 8));
  else
    (void) WriteBlobLSBLong(image,
             (unsigned int) (Max(1,(image->columns+3)/4) * 16));

  (void) WriteBlobLSBLong(image,0x00);
  (void) WriteBlobLSBLong(image,(unsigned int) mipmaps+1);
  (void) ResetMagickMemory(software,0,sizeof(software));
  (void) strcpy(software,"IMAGEMAGICK");
  (void) WriteBlob(image,44,(unsigned char *) software);

  (void) WriteBlobLSBLong(image,32);
  (void) WriteBlobLSBLong(image,format);

  if (pixelFormat == DDPF_FOURCC)
    {
      (void) WriteBlobLSBLong(image,(unsigned int) compression);
      for(i=0;i < 5;i++) // bitcount / masks
        (void) WriteBlobLSBLong(image,0x00);
    }
  else
    {
      (void) WriteBlobLSBLong(image,0x00);
      if (image->matte)
        {
          (void) WriteBlobLSBLong(image,32);
          (void) WriteBlobLSBLong(image,0xff0000);
          (void) WriteBlobLSBLong(image,0xff00);
          (void) WriteBlobLSBLong(image,0xff);
          (void) WriteBlobLSBLong(image,0xff000000);
        }
      else
        {
          (void) WriteBlobLSBLong(image,24);
          (void) WriteBlobLSBLong(image,0xff);
          (void) WriteBlobLSBLong(image,0x00);
          (void) WriteBlobLSBLong(image,0x00);
          (void) WriteBlobLSBLong(image,0x00);
        }
    }
  
  (void) WriteBlobLSBLong(image,caps);
  for(i=0;i < 4;i++) // ddscaps2 + reserved region
    (void) WriteBlobLSBLong(image,0x00);
}

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.