archive mirror
 help / color / mirror / Atom feed
From: Tong Zhang <>
Subject: Leaking path for search_binary_handler
Date: Tue, 25 Sep 2018 13:27:03 -0400	[thread overview]
Message-ID: <> (raw)

Kernel Version: 4.18.5

Problem Description:

search_binary_handler() should be called after setting bprm using prepare_binprm(),
and in prepare_binprm(), there’s a LSM hook security_bprm_set_creds(), 
which can make a decision that binfmt cares.

We found a leaking path In fs/binfmt_misc.c:235, that don’t ask LSM’s decision.

- Tong

             reply	other threads:[~2018-09-25 23:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-25 17:27 Tong Zhang [this message]
2018-09-26 12:59 ` Leaking path for search_binary_handler Stephen Smalley

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \

* 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;
as well as URLs for NNTP newsgroup(s).