netdev - Re: [RFC] Validate ethtool autoneg before relaying

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 for Android: free password hash cracker in your pocket

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

Date:	Wed, 26 Nov 2008 15:44:06 -0800
From:	"Matt Carlson" <mcarlson@...adcom.com>
To:	"Michael Chan" <mchan@...adcom.com>
cc:	"Matthew Carlson" <mcarlson@...adcom.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [RFC] Validate ethtool autoneg before relaying

On Wed, Nov 26, 2008 at 03:28:12PM -0800, Michael Chan wrote:
> 
> On Wed, 2008-11-26 at 14:17 -0800, Matt Carlson wrote:
> > diff --git a/net/core/ethtool.c b/net/core/ethtool.c
> > index 14ada53..6362f56 100644
> > --- a/net/core/ethtool.c
> > +++ b/net/core/ethtool.c
> > @@ -164,6 +164,9 @@ static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
> >         if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
> >                 return -EFAULT;
> >  
> > +       if (cmd.autoneg != AUTONEG_ENABLE && cmd.autoneg != AUTONEG_DISABLE)
> > +               return -EFAULT;
> > +
> 
> Matt, you should return -EINVAL here instead.

Yes.  You are right.  I'll fix this in a revised patch if everyone
decides this is an effort worth pursuing.

> >         return dev->ethtool_ops->set_settings(dev, &cmd);
> >  }
> >  
> 


--
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