Subject: Re: Non executable mappings and compatibility options bugs
To: Chuck Silvers <>
From: Erik E. Fair <>
List: tech-security
Date: 06/21/2004 08:28:56
At 9:55 -0400 6/21/04, Thor Lancelot Simon wrote:
>On Sun, Jun 20, 2004 at 10:55:23AM -0700, Chuck Silvers wrote:
>>  it would be safest to default to making everything executable for other
>>  emulations until it can be verified that those binaries work ok with
>>  non-executable mappings.  this seems fine to me.
>I strongly disagree; this would be a regression, with no warning to the
>user, in system security.  Adding a COMPAT_ option shouldn't punch a giant
>hole in a fundamental security mechanism.
>If nothing else, both config and the kernel at boot time should print
>warnings about this.

I agree completely with what Thor wrote, with feeling. Emphasis. Exclamation.

	Erik <>