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Date: Thu, 14 Nov 2002 10:08:04 +0100
From: Helge Hafting <helgehaf@aitel.hist.no>
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To: Jirka Kosina <jikos@jikos.cz>
CC: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: FW: i386 Linux kernel DoS
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Jirka Kosina wrote:
[...]
> At the beginning I thought only kernels <= 2.4.18 were affected; but it
> appeared that both kernels 2.4.19 and 2.4.20-rc1 are vulnerable as well.
> The flaw seems to be related to the kernel's handling of the nested task
> (NT) flag inside a lcall7.

Ouch.  That one froze up 2.5.47, running from a user account.
I couldn't recover with sysrq, but I was able to
emergency remount-ro avoiding the bootup fsck's.

Helge Hafting
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