kernel: multiple vulnerabilities

From the Red Hat advisory:

* A missing initialization flaw in sco_sock_getsockopt_old() could allow a local, unprivileged user to cause an information leak. (CVE-2011-1078, Low)

* Missing validations of null-terminated string data structure elements in the do_replace(), compat_do_replace(), do_ipt_get_ctl(), do_ip6t_get_ctl(), and do_arpt_get_ctl() functions could allow a local user who has the CAP_NET_ADMIN capability to cause an information leak. (CVE-2011-1170, CVE-2011-1171, CVE-2011-1172, CVE-2011-1080, Low)