linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Patrick McHardy <kaber@trash.net>
To: "Michał Mirosław" <mirq-linux@rere.qmqm.pl>
Cc: netfilter-devel@lists.netfilter.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2.6.20 12/14] nfnetlink_log: possible NULL pointer	dereference in nfulnl_recv_config()
Date: Tue, 13 Feb 2007 13:55:49 +0100	[thread overview]
Message-ID: <45D1B555.6040302@trash.net> (raw)
In-Reply-To: <20070212202224.GC28704@rere.qmqm.pl>

Micha³ Miros³aw wrote:
> Eliminate possible NULL pointer dereference in nfulnl_recv_config().
> 
> Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
> 
> --- linux-2.6.20/net/netfilter/nfnetlink_log.c.10	2007-02-12 17:05:14.000000000 +0100
> +++ linux-2.6.20/net/netfilter/nfnetlink_log.c	2007-02-12 17:35:50.000000000 +0100
> @@ -853,6 +853,9 @@ nfulnl_recv_config(struct sock *ctnl, st
>  			ret = -EINVAL;
>  			break;
>  		}
> +
> +		if (!inst)
> +			goto out_null;

I think we should check that an instance is present before doing
any changes any return an error if the user tries to change the
configuration for a non-existant instance.

  reply	other threads:[~2007-02-13 12:55 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-12  0:37 [PATCH 2.6.20 00/10] nfnetlink_log: patch series introduction Michał Mirosław
2007-02-12 20:20 ` [PATCH 2.6.20 +0/14] nfnetlink_log: patch series season 2 Michał Mirosław
2007-02-12 20:22   ` [PATCH 2.6.20 11/14] nfnetlink_log: iterator functions need iter_state * only Michał Mirosław
2007-02-13 12:51     ` Patrick McHardy
2007-02-12 20:22   ` [PATCH 2.6.20 12/14] nfnetlink_log: possible NULL pointer dereference in nfulnl_recv_config() Michał Mirosław
2007-02-13 12:55     ` Patrick McHardy [this message]
2007-02-12 20:22   ` [PATCH 2.6.20 13/14] nfnetlink_log: fix reference counting Michał Mirosław
2007-02-13 12:58     ` Patrick McHardy
2007-02-14 11:38       ` Michał Mirosław
2007-02-12 20:23   ` [PATCH 2.6.20 14/14] nfnetlink_log: micro-optimization: inst->skb != NULL in __nfulnl_send() Michał Mirosław
2007-02-14 11:57     ` Michał Mirosław

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=45D1B555.6040302@trash.net \
    --to=kaber@trash.net \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mirq-linux@rere.qmqm.pl \
    --cc=netfilter-devel@lists.netfilter.org \
    --subject='Re: [PATCH 2.6.20 12/14] nfnetlink_log: possible NULL pointer	dereference in nfulnl_recv_config()' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).