The rds_page_copy_user function in net/rds/page.c in the Reliable Datagram
Sockets (RDS) protocol implementation in the Linux kernel before 2.6.36
does not properly validate addresses obtained from user space, which allows
local users to gain privileges via crafted use of the sendmsg and recvmsg
system calls.

Dan Rosenberg discovered that the RDS network protocol did not correctly
check certain parameters. A local attacker could exploit this gain root
privileges.

sconklin