This exploit seems to be working for => 2.6.18-194 & 2.6.18-294 kernels...of 2010 till September.
Try your luck may be you get r00t :)
all the best..
First of all...copy and save it in a file => exploit.c
To Run it..first you need to compile it. by typing-
=> gcc -o exploit exploit.c
then change the permissions to 777..for That type
=> Chmod +x exploit
then simple run it by..
=> ./exploit
Rest work is on exploit.. :)