netdev - Re: bug in passing file descriptors

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]

Date:	Mon, 7 Oct 2013 16:29:15 -0400
From:	Steve Rago <sar@...-labs.com>
To:	David Miller <davem@...emloft.net>
CC:	<luto@...capital.net>, <netdev@...r.kernel.org>,
	<mtk.manpages@...il.com>, <ebiederm@...ssion.com>
Subject: Re: bug in passing file descriptors

On 10/07/2013 03:42 PM, David Miller wrote:
> There is no compatability issue.
>
> 32-bit tasks will always see the 4-byte align/length.
> 64-bit tasks will always see the 8-byte align/length.
>

Really?  So when I compile my application on a 32-bit Linux box and then try to run it on a 64-bit Linux box, you're not 
going to overrun my buffer when CMSG_SPACE led me to allocate an insufficient amount of memory needed to account for 
padding on the 64-bit platform?

By the way, FreeBSD, Mac OS X, and Solaris all behave as I described, so if you're happy with Linux behaving 
differently, then I'll stop wasting bandwidth.

Steve

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html