Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!ogicse!decwrl!sgi!shinobu!odin!moose!jwag
From: jwag@moose.sgi.com (Chris Wagner)
Newsgroups: comp.sys.sgi
Subject: Re: /dev/mmem 666 out of the box.  Why?
Keywords: security
Message-ID: <4632@odin.SGI.COM>
Date: 27 Feb 90 23:07:41 GMT
References: <13851@phoenix.Princeton.EDU>
Sender: news@odin.SGI.COM
Reply-To: jwag@moose.sgi.com (Chris Wagner)
Distribution: comp
Organization: Silicon Graphics, Research & Development
Lines: 11

/dev/mmem is the mapped device interface to /dev/mem - however the
allowed set of mappings
is determined by a table located in /usr/sysgen/master/mem - currently
that contains
only the sound chip and ecc memopry logging ram - neither of these  is a
security issue -
though it is true that one user could interfere with another... The
sound chip is
mainly used to playing around with

Chris Wagner