2.2.0 SECURITY

Dan Burcaw (dburcaw@terraplex.com)
Tue, 26 Jan 1999 21:46:06 -0700 (MST)

There is a bug that works only on the 2.2.0 kernel that will allow root
and non-root users to crash the machine (the system reboots).

To replicate this bug do following:

Take any core file, and as normal user or root run: ldd core

The machine will reboot, saying that it cannot get execution permissions
for ./core

As far as I can tell, this problem only affects x86 machines running
2.2.0. I know that PPC is not affected.

Note: This problem does not occur in kernels before 2.2.0, and is
apparently fixed in 2.2.0ac1.

Thanks to Gennady Gurov (gurov@frii.com) for discovering this problem.

Dan

Terra Firma Design & Terra Soft Solutions, Inc.

voice (970) 416-9821 in Fort Collins
email dburcaw@terraplex.com
website http://www.terraplex.com/

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