From: Segher Boessenkool <segher@kernel.crashing.org>
To: "linux-os \(Dick Johnson\)" <linux-os@analogic.com>
Cc: "Ed White" <ed.white@libero.it>, "ML" <linux-kernel@vger.kernel.org>
Subject: Re: SecurityFocus Article
Date: Fri, 12 May 2006 02:19:14 +0200 [thread overview]
Message-ID: <494244CE-33D6-4A9D-8C84-A439D427C143@kernel.crashing.org> (raw)
In-Reply-To: <Pine.LNX.4.61.0605111140030.3833@chaos.analogic.com>
> If the SMRAM control register exists, the D_LCK bit can be set
> in 16-bit mode during the boot sequence. This makes the SMRAM
> register read/only so the long potential compromise sequence
> that Mr. Duflot describes would not be possible. If the control
> register doesn't exist, then the vulnerably doesn't exist.
No, if there is no mechanism to lock down SMmode (re)configuration,
the vulnerability of course _does_ exist.
> The writer doesn't like the fact that a root process can execute
Rest of this email happily ignored...
Segher
next prev parent reply other threads:[~2006-05-12 0:19 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-11 14:34 Ed White
2006-05-11 15:06 ` Andi Kleen
2006-05-11 15:32 ` Alan Cox
2006-05-11 15:47 ` linux-os (Dick Johnson)
2006-05-11 20:03 ` Ingo Oeser
2006-05-12 0:19 ` Segher Boessenkool [this message]
2006-05-12 3:17 ` Jon Smirl
2006-05-12 4:13 ` Dave Airlie
2006-05-12 5:07 ` Jon Smirl
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