Linux Kernel GRE Protocol Initialization Remote Denial of Service Vulnerability

Solution Verified - Updated -

Issue

Linux Kernel GRE Protocol Initialization Remote Denial of Service Vulnerability.
How do I ascertain if we are vulnerable?

I've run a modprobe command with the following output, could you confirm if this indicates vulnerability?

modprobe -l |grep gre
/lib/modules/2.6.18-128.11.1.el5/kernel/net/ipv4/ip_gre.ko
/lib/modules/2.6.18-128.11.1.el5/kernel/net/sched/sch_gred.ko
/lib/modules/2.6.18-128.11.1.el5/kernel/net/sched/sch_ingress.ko

More information available here: http://www.securityfocus.com/bid/38301

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