linux-kernel - Re: [PATCH v2 1/2] procfs: make /proc/*/{stack,syscall,personality} 0400

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] [day] [month] [year] [list]

Message-ID: <20140325101550.GA3283@dztty>
Date:	Tue, 25 Mar 2014 11:15:50 +0100
From:	Djalal Harouni <tixxdz@...ndz.org>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 1/2] procfs: make /proc/*/{stack,syscall,personality}
 0400

Hi Alexey,

On Mon, Mar 24, 2014 at 04:41:43PM +0300, Alexey Dobriyan wrote:
> > - ONE("stack",      S_IRUGO, proc_pid_stack),
> > + ONE("stack",      S_IRUSR, proc_pid_stack),
> 
> no love for /proc/*/wchan?

Yes you are right, didn't want to modify lot of things, and I missed that one.

So there is the ptrace check that will just block cases where users do
_not_ play tricks with the fd. I'll send another v3 with that included.

Thanks!

-- 
Djalal Harouni
http://opendz.org
--
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/