nginx error connect to php5-fpm.sock failed (13: Permission denied)

I update nginx to **1.4.7** and php to **5.5.12**, After that I got the **502 error**. Before I update everything works fine. nginx-error.log 2014/05/03 13:27:41 [crit] 4202#0: *1 connect() to unix:/var/run/php5-fpm.sock failed (13: Permission denied) while connecting to upstream, client: xx.xxx.xx.xx, server: localhost, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:", host: "xx.xx.xx.xx" nginx.conf user www www; worker_processes 1; location / { root /usr/home/user/public_html; index index.php index.html index.htm; } location ~ [^/]\.php(/|$) { fastcgi_split_path_info ^(.+?\.php)(/.*)$; fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /usr/home/user/public_html$fastcgi_script_name; include fastcgi_params; }