[28042] in bugtraq
Re: d_path() truncating excessive long path name vulnerability
daemon@ATHENA.MIT.EDU (Paul Szabo)
Thu Nov 28 11:41:00 2002
Date: Wed, 27 Nov 2002 13:04:04 +1100 (EST)
From: psz@maths.usyd.edu.au (Paul Szabo)
Message-Id: <200211270204.gAR244k330285@milan.maths.usyd.edu.au>
To: bugtraq@securityfocus.com, cliph@isec.pl, linux-kernel@vger.kernel.org,
security@debian.org, security@isec.pl, vulnwatch@vulnwatch.org
Back in March 2002, Wojciech Purczynski <cliph@isec.pl> wrote (original
article at http://online.securityfocus.com/archive/1/264117 ):
> Name: Linux kernel
> Version: up to 2.2.20 and 2.4.18
> ...
> In case of excessively long path names d_path kernel internal function
> returns truncated trailing components of a path name instead of an error
> value. As this function is called by getcwd(2) system call and
> do_proc_readlink() function, false information may be returned to
> user-space processes.
The problem is still present in Debian 2.4.19 kernel. I have not tried 2.5,
but see nothing relevant in the Changelogs at http://www.kernel.org/ .
Cheers,
Paul Szabo - psz@maths.usyd.edu.au http://www.maths.usyd.edu.au:8000/u/psz/
School of Mathematics and Statistics University of Sydney 2006 Australia
