linux-kernel - Re: [RFC 1/1] seccomp: Add bitmask of allowed system calls.

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Message-ID: <a84d7bc60905151329h677e5a96l76a9a7d708bfc5ad@mail.gmail.com>
Date:	Fri, 15 May 2009 13:29:15 -0700
From:	Adam Langley <agl@...gle.com>
To:	Pavel Machek <pavel@....cz>
Cc:	linux-kernel@...r.kernel.org, markus@...gle.com
Subject: Re: [RFC 1/1] seccomp: Add bitmask of allowed system calls.

On Fri, May 15, 2009 at 12:56 PM, Pavel Machek <pavel@....cz> wrote:
> If you allow setuid exec here, you have added a security hole. Deny
> setuid() to sendmail and have fun...

Good point there. If you have any seccomp enabled you shouldn't be
able to run suid binaries. Being able to deny random syscalls to suid
binaries is too scary.

If this patch ever goes anywhere I'll add that.

Thanks

AGL
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