CVSS v2 metrics

Base Score	6.9
Base Metrics	AV:L/AC:M/Au:N/C:C/I:C/A:C
Access Vector	Local
Access Complexity	Medium
Authentication	None
Confidentiality Impact	Complete
Integrity Impact	Complete
Availability Impact	Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform	Errata	Release Date
Red Hat Enterprise Linux 4 (kernel)	RHSA-2011:0162	2011-01-18
Red Hat Enterprise Linux 5 (kernel)	RHSA-2011:0004	2011-01-04

Mitigation

For users that do not run applications that use TIPC, you can prevent the TIPC
module from being loaded by adding the following entry to the end of the
/etc/modprobe.d/blacklist file:

blacklist tipc

This way, the TIPC module cannot be loaded accidentally, which may occur if an
application that requires TIPC is started. A reboot is not necessary for this
change to take effect but do make sure the module is not loaded in the first
place. You can verify that by running:

lsmod | grep tipc

You may also consider removing the CAP_SYS_MODULE capability from the current
global capability set to prevent kernel modules from being loaded or unloaded.
The CAP_SYS_MODULE has a capability number of 16 (see linux/capability.h). The
default value has all the bits set. To remove this capability, you have to
clear the 16th bit of the default 32-bit value, e.g. 0xffffff ^ (1 << 16):

echo 0xFFFEFFFF > /proc/sys/kernel/cap-bound