public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
From: Greg KH <gregkh@linuxfoundation.org>
To: Tong Zhang <ztong@vt.edu>
Cc: arve@android.com, tkjos@android.com, maco@android.com,
	devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	Wenbo Shen <shenwenbosmile@gmail.com>
Subject: Re: leaking path in android binder: set_nice
Date: Tue, 25 Sep 2018 19:38:10 +0200	[thread overview]
Message-ID: <20180925173810.GB20508@kroah.com> (raw)
In-Reply-To: <56B089F7-3656-4335-BBD2-D8B3CFD70996@vt.edu>

On Tue, Sep 25, 2018 at 01:27:11PM -0400, Tong Zhang wrote:
> Kernel Version: 4.18.5
> 
> Problem Description:
> 
> When setting nice value, it is checked by LSM function security_task_setnice().
> see kernel/sched/core.c:3972 SYSCALL_DEFINE1(nice, int, increment)
> 
> We discovered a leaking path in android binder which allows using binder’s interface to change 
> a process’s nice value. This path is leaked from being monitored by LSM.
> see drivers/android/binder.c:1107 binder_set_nice.

Can you please submit a patch for this to get the proper credit for
finding and fixing this?

thanks,

greg k-h

  reply	other threads:[~2018-09-25 17:38 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-25 17:27 leaking path in android binder: set_nice Tong Zhang
2018-09-25 17:38 ` Greg KH [this message]
2018-09-25 17:52 ` Stephen Smalley
2018-09-26  2:58   ` Theodore Y. Ts'o

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=20180925173810.GB20508@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=arve@android.com \
    --cc=devel@driverdev.osuosl.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-security-module@vger.kernel.org \
    --cc=maco@android.com \
    --cc=shenwenbosmile@gmail.com \
    --cc=tkjos@android.com \
    --cc=ztong@vt.edu \
    /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
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox