kernel security and bug fix update

kernel
[2.6.18-348.4.1]

• [virt] xen-netback: backports (Andrew Jones) [910884 910885] {CVE-2013-0216}
• [virt] xen-netback: netif_schedulable should take a netif (Andrew Jones) [910884 910885] {CVE-2013-0216}
• [virt] pciback: rate limit error mess from pciback_enable_msi() (Igor Mammedov) [910876 910877] {CVE-2013-0231}
• [net] be2net: remove BUG_ON() in be_mcc_compl_is_new() (Ivan Vecera) [923910 907524]
• [net] ipv4: Update MTU to all related cache entries (Amerigo Wang) [923353 905190]
• [net] annotate rt_hash_code() users (Amerigo Wang) [923353 905190]
• [net] xfrm_user: fix info leak in copy_to_user_state() (Thomas Graf) [922426 922427] {CVE-2012-6537}
• [net] xfrm_user: fix info leak in copy_to_user_policy() (Thomas Graf) [922426 922427] {CVE-2012-6537}
• [net] xfrm_user: fix info leak in copy_to_user_tmpl() (Thomas Graf) [922426 922427] {CVE-2012-6537}
• [net] atm: fix info leak in getsockopt(SO_ATMPVC) (Thomas Graf) [922384 922385] {CVE-2012-6546}
• [net] atm: fix info leak via getsockname() (Thomas Graf) [922384 922385] {CVE-2012-6546}
• [net] tun: fix ioctl() based info leaks (Thomas Graf) [922348 922349] {CVE-2012-6547}
• [net] llc, zero sockaddr_llc struct (Thomas Graf) [922327 922329] {CVE-2012-6542}
• [net] llc: fix info leak via getsockname() (Thomas Graf) [922327 922329] {CVE-2012-6542}
• [net] xfrm_user: return error pointer instead of NULL (Thomas Graf) [919386 919387] {CVE-2013-1826}
• [net] ixgbevf: allocate room for mailbox MSI-X interrupt’s name (Laszlo Ersek) [924134 862862]
• [fs] knfsd: allow nfsd READDIR to return 64bit cookies (Niels de Vos) [924087 918952]