netdev - Re: [PATCH 1/4] netfilter: ipset: fix timeout value overflow bug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120514190015.GB14897@1984>
Date:	Mon, 14 May 2012 21:00:15 +0200
From:	Pablo Neira Ayuso <pablo@...filter.org>
To:	Jozsef Kadlecsik <kadlec@...ckhole.kfki.hu>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	David Laight <David.Laight@...LAB.COM>,
	netfilter-devel@...r.kernel.org, davem@...emloft.net,
	netdev@...r.kernel.org
Subject: Re: [PATCH 1/4] netfilter: ipset: fix timeout value overflow bug

On Mon, May 14, 2012 at 07:45:07PM +0200, Jozsef Kadlecsik wrote:
> On Mon, 14 May 2012, Eric Dumazet wrote:
> 
> > On Mon, 2012-05-14 at 16:36 +0200, Pablo Neira Ayuso wrote:
> > > On Mon, May 14, 2012 at 03:19:49PM +0100, David Laight wrote:
> > > >  
> > > > > --- a/include/linux/netfilter/ipset/ip_set_timeout.h
> > > > > +++ b/include/linux/netfilter/ipset/ip_set_timeout.h
> > > > > @@ -30,6 +30,10 @@ ip_set_timeout_uget(struct nlattr *tb)
> > > > >  {
> > > > >  	unsigned int timeout = ip_set_get_h32(tb);
> > > > >  
> > > > > +	/* Normalize to fit into jiffies */
> > > > > +	if (timeout > UINT_MAX/1000)
> > > > > +		timeout = UINT_MAX/1000;
> > > > > +
> > > > 
> > > > Doesn't that rather assume that HZ is 1000 ?
> > > 
> > > Indeed. I overlooked that. Thanks David.
> > 
> > I dont think so.
> > 
> > 1000 here is really MSEC_PER_SEC
> > 
> > (All occurrences should be changed in this file)
> 
> Yes, exactly. Pablo, shall I produce a little patch or could you change 
> 1000 to MSEC_PER_SEC?

I'll mangle this myself. No need to send a new patch.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html