netdev - Re: [PATCH] xfrm: fix crash in XFRM_MSG

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Date:	Wed, 6 Jul 2016 10:27:29 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	vegard.nossum@...cle.com, steffen.klassert@...unet.com,
	nicolas.dichtel@...nd.com, netdev@...r.kernel.org
Subject: Re: [PATCH] xfrm: fix crash in XFRM_MSG_GETSA netlink handler

On Tue, Jul 05, 2016 at 12:13:03PM -0700, David Miller wrote:
> From: Vegard Nossum <vegard.nossum@...cle.com>
> Date: Tue,  5 Jul 2016 10:18:08 +0200
> 
> > If we hit any of the error conditions inside xfrm_dump_sa(), then
> > xfrm_state_walk_init() never gets called. However, we still call
> > xfrm_state_walk_done() from xfrm_dump_sa_done(), which will crash
> > because the state walk was never initialized properly.
> > 
> > We can fix this by setting cb->args[0] only after we've processed the
> > first element and checking this before calling xfrm_state_walk_done().
> > 
> > Fixes: d3623099d3 ("ipsec: add support of limited SA dump")
> > Cc: Nicolas Dichtel <nicolas.dichtel@...nd.com>
> > Cc: Steffen Klassert <steffen.klassert@...unet.com>
> > Signed-off-by: Vegard Nossum <vegard.nossum@...cle.com>
> 
> I assume Steffen will pick this up.

I think Steffen said that he is going to be on vacation for two
weeks starting this week.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt