"Linux kernel is prone to a local privilege-escalation vulnerability
that is caused by a NULL-pointer dereference.
Local attackers can exploit this issue to execute arbitrary code with
kernel-level privileges. Successful exploits will result in the complete
compromise of affected computers. Failed exploit attempts will result in
a denial-of-service condition. "
This affects RHEL, SuSE, etc. Kernels before 220.127.116.11.
Check with your vendor for an update and apply as soon as possible.