Race condition in the cm_work_handler function in the InfiniBand driver (drivers/infiniband/core/cma.c) in Linux kernel 2.6.x allows remote attackers to cause a denial of service (panic) by sending an InfiniBand request while other request handlers are still running, which triggers an invalid pointer dereference.
rhn.redhat.com/errata/RHSA-2011-0927.html
secunia.com/advisories/43693
www.openwall.com/lists/oss-security/2011/03/11/1
www.securityfocus.com/bid/46839
www.spinics.net/lists/linux-rdma/msg07447.html
www.spinics.net/lists/linux-rdma/msg07448.html
www.ubuntu.com/usn/USN-1146-1
exchange.xforce.ibmcloud.com/vulnerabilities/66056