A flaw was found in the way the Linux kernel’s WiMAX i2400 driver handled memory release in certain error codes path in the RF kill switch control function. A local attacker able to control the device could use this flaw to crash the system.

Mitigation

As the i2400m module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions:

echo "install i2400m /bin/true" >> /etc/modprobe.d/disable-i2400m.conf

The system will need to be restarted if the i2400m module is already loaded. In most circumstances, the i2400m kernel module will be unable to be unloaded while the device is in use. If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article <https://access.redhat.com/solutions/41278&gt; or contact Red Hat Global Support Services.