From: Andreas Schwab <schwab@suse.de>
To: Arjan van de Ven <arjan@infradead.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: how to determine if the noexec stack is defined by an application
Date: Sat, 30 Jun 2007 00:15:19 +0200 [thread overview]
Message-ID: <jefy4aflvs.fsf@sykes.suse.de> (raw)
In-Reply-To: <1183153758.2894.1.camel@laptopd505.fenrus.org> (Arjan van de Ven's message of "Fri\, 29 Jun 2007 14\:49\:18 -0700")
Arjan van de Ven <arjan@infradead.org> writes:
> like this:
>
> $ eu-readelf -l /bin/true | grep STACK
> GNU_STACK 0x000000 0x00000000 0x00000000 0x000000 0x000000 RW 0x4
>
>
> (replace /bin/true with the binary or library you want to check)
>
> if it says "RW" like here, it'll have non-executable stack. If it says
> "RWX" or if this line is absent entirely, the stack will be executable.
The last part is not true. Some architectures (especially newer ones)
default to non-exec stack. The absense of a GNU_STACK header represents
the default.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2007-06-29 22:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-29 20:44 how to determine if the noexec stack is defined by an application Florin Andrei
2007-06-29 21:49 ` Arjan van de Ven
2007-06-29 22:15 ` Andreas Schwab [this message]
2007-06-29 22:27 ` Arjan van de Ven
2007-06-29 22:41 ` Andreas Schwab
2007-06-29 22:43 ` Arjan van de Ven
2007-06-30 1:21 ` Florin Andrei
2007-06-30 5:16 ` Arjan van de Ven
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=jefy4aflvs.fsf@sykes.suse.de \
--to=schwab@suse.de \
--cc=arjan@infradead.org \
--cc=linux-kernel@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.