static struct ip_vs_service *ip_vs_genl_find_service(struct nlattr *nla)
{
	struct ip_vs_service_user_kern usvc;
	int ret;

	ret = ip_vs_genl_parse_service(&usvc, nla, 0);
	if (ret)
		return ERR_PTR(ret);

	if (usvc.fwmark)
		return __ip_vs_svc_fwm_get(usvc.af, usvc.fwmark);
	else
		return __ip_vs_service_get(usvc.af, usvc.protocol,
					   &usvc.addr, usvc.port);
}

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.