linux-kernel - Re: [RFC] [PATCH] Improve the remove sysctl warnings.

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: <Pine.LNX.4.64.0610191553090.967@lancer.cnet.absolutedigital.net>
Date:	Thu, 19 Oct 2006 15:55:49 -0400 (EDT)
From:	Cal Peake <cp@...olutedigital.net>
To:	Alexey Dobriyan <adobriyan@...il.com>
cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andrew Morton <akpm@...l.org>,
	Linus Torvalds <torvalds@...l.org>,
	Albert Cahalan <acahalan@...il.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RFC] [PATCH] Improve the remove sysctl warnings.

On Thu, 19 Oct 2006, Alexey Dobriyan wrote:

> On Thu, Oct 19, 2006 at 12:25:20PM -0400, Cal Peake wrote:
> > On Wed, 18 Oct 2006, Eric W. Biederman wrote:
> >
> > >  	if (msg_count < 5) {
> > >  		msg_count++;
> > >  		printk(KERN_INFO
> > >  			"warning: process `%s' used the removed sysctl "
> > > -			"system call\n", current->comm);
> > > +			"system call with ", current->comm);
> > > +		for (i = 0; i < tmp.nlen; i++)
> > > +			printk("%d.", name[i]);
> > > +		printk("\n");
> > >  	}
> >
> > We should prolly kill the counter now.
> 
> sysctl(2) callable by everyone including local lusers willing to fill logs.

Users don't even need to write a program to do this, see logger(1). If we 
keep the counter then after 5 calls we lose potential debugging info.

  - C.

-- 
"There is nothing wrong with your television set. Do not attempt
    to adjust the picture. We are controlling transmission."
                    -- The Outer Limits

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/