The slip_down function in slip.c for the uml_net program in uml-utilities 20030903, when uml_net is installed setuid root, does not verify whether the calling user has sufficient permission to disable an interface, which allows local users to cause a denial of service (network service disabled).

The slip_down function in slip.c for the uml_net program in uml-utilities 20030903, when uml_net is installed setuid root, does not verify whether the calling user has sufficient permission to disable an interface, which allows local users to cause a denial of service (network service disabled).