png_get_header_version(png_structp png_ptr)
{
   /* Returns longer string containing both version and date */
   PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
#ifdef __STDC__
   return ((png_charp) PNG_HEADER_VERSION_STRING
#ifndef PNG_READ_SUPPORTED
   "     (NO READ SUPPORT)"
#endif
   PNG_STRING_NEWLINE);
#else
   return ((png_charp) PNG_HEADER_VERSION_STRING);
#endif
}

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.