From: Chris Friesen <cfriesen@nortelnetworks.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Raphael Rigo <raphael.rigo@inp-net.eu.org>,
linux-kernel@vger.kernel.org, andrea@suse.de
Subject: Re: New do_mremap vulnerabitily.
Date: Wed, 18 Feb 2004 17:13:56 -0500 [thread overview]
Message-ID: <4033E3A4.80509@nortelnetworks.com> (raw)
In-Reply-To: Pine.LNX.4.58.0402180954590.2686@home.osdl.org
Linus Torvalds wrote:
> Fixed in 2.6.3 and 2.4.25 (and, I think, vendor kernels), please upgrade
> if you allow local shell access to untrusted users.
There is still a call to do_munmap() that does not check the return
code, called from move_vma(), which in turn is called in do_mremap().
Can that call ever fail and cause Bad Things to happen?
If we know that its never going to fail, it might be useful to have a
comment explaining it so we don't open up more exploits in the future.
Chris
--
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next prev parent reply other threads:[~2004-02-18 22:14 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-18 15:26 New do_mremap vulnerabitily Raphael Rigo
2004-02-18 17:56 ` Linus Torvalds
2004-02-18 22:13 ` Chris Friesen [this message]
2004-02-18 22:26 ` Linus Torvalds
2004-02-18 23:49 ` Andrea Arcangeli
2004-02-18 23:46 ` Andrea Arcangeli
-- strict thread matches above, loose matches on Subject: below --
2004-02-18 17:08 Ulrich Keil
2004-02-18 18:43 ` Chris Friesen
2004-02-18 20:20 ` Richard B. Johnson
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