static void do_free_upto(BIO *f, BIO *upto)
	{
	if (upto)
		{
		BIO *tbio;
		do 
			{
			tbio = BIO_pop(f);
 			BIO_free(f);
 			f = tbio;
 			}
		while (f != upto);
 		}
 	else
 		BIO_free_all(f);
	}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.