linux-kernel - Re: [PATCH] exec: do not leave bprm->interp on stack

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: <alpine.LFD.2.02.1211191158550.5042@wniryva.cad.erqung.pbz>
Date:	Mon, 19 Nov 2012 12:27:53 +0530 (IST)
From:	P J P <ppandit@...hat.com>
To:	Kees Cook <keescook@...omium.org>
cc:	Al Viro <viro@...iv.linux.org.uk>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Josh Triplett <josh@...htriplett.org>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	linux-fsdevel@...r.kernel.org, halfdog <me@...fdog.net>
Subject: Re: [PATCH] exec: do not leave bprm->interp on stack

+-- On Sun, 18 Nov 2012, Kees Cook wrote --+
| This is the second problem. I view this as less critical because it's only 
| 64 instead of 4, but it certainly should be solved as well.

  I don't mean to be rude, but the patch I had sent solves both of these 
problems with much less performance hit.

Please see -> https://lkml.org/lkml/2012/10/26/442

Worst case: instead of 2^6(64) recursions, it would make only 4 calls to 
request_module() function. find_module() does not resolve module aliases, it 
could be removed from the above patch.

Please pardon me if I came across rude or offensive, I'm only trying to make a 
case.
--
Prasad J Pandit / Red Hat Security Response Team
DB7A 84C5 D3F9 7CD1 B5EB  C939 D048 7860 3655 602B
--
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/