oss-security - Re: CVE request: kernel: Unix sockets kernel panic

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Date: Fri, 21 Nov 2008 12:00:24 -0700
From: dann frazier <dannf@...ian.org>
To: oss-security@...ts.openwall.com
Cc: "Steven M. Christey" <coley@...us.mitre.org>
Subject: Re: CVE request: kernel: Unix sockets kernel panic

On Tue, Nov 11, 2008 at 05:41:44PM +0800, Eugene Teo wrote:
> Eugene Teo wrote:
> > We need a CVE name for this issue. This was reported in netdev today.
> > 
> > "The following code causes a kernel panic on Linux 2.6.26:
> > http://darkircop.org/unix.c
> > 
> > I haven't investigated the bug so I'm not sure what is causing it, and
> > don't know if it's exploitable.  The code passes unix sockets from one
> > process to another using unix sockets.  The bug probably has to do
> > with closing file descriptors."
> > 
> > http://marc.info/?l=linux-netdev&m=122593044330973&w=2
> > https://bugzilla.redhat.com/show_bug.cgi?id=470201
> > 
> > There isn't a fix yet. Dave is working on it.
> 
> There's a fix now.
> 
> Upstream commits: f8d570a, 3b53fbf, and 6209344.
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=470201#c10
> https://bugzilla.redhat.com/show_bug.cgi?id=470201#c14
> https://bugzilla.redhat.com/show_bug.cgi?id=470201#c9
> https://bugzilla.redhat.com/show_bug.cgi?id=470201#c13

Thanks for following up.

fyi, our testing of this fix has uncovered additional issues.
Local/unprivileged users can cause soft lockups and take out system
processes by triggering the OOM killer:
  http://marc.info/?l=linux-netdev&m=122721862313564&w=2

-- 
dann frazier

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