linux-kernel - Re: problems with latest smbfs changes on 2.4.34 and security backports

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Message-ID: <20070124001123.GG26310@colo>
Date:	Tue, 23 Jan 2007 17:11:24 -0700
From:	dann frazier <dannf@...nf.org>
To:	Grant Coady <gcoady.lk@...il.com>
Cc:	Willy Tarreau <w@....eu>,
	Santiago Garcia Mantinan <manty@...ian.org>,
	linux-kernel@...r.kernel.org, debian-kernel@...ts.debian.org
Subject: Re: problems with latest smbfs changes on 2.4.34 and security backports

On Wed, Jan 24, 2007 at 10:46:24AM +1100, Grant Coady wrote:
> On Tue, 23 Jan 2007 14:12:57 -0700, dann frazier <dannf@...nf.org> wrote:
> 
> >Users have reported a symlink issue with my recent smbfs backport.
> >Turns out my backport overlooked a second 2.6 patch w/ the fix:
> > http://linux.bkbits.net:8080/linux-2.6/?PAGE=cset&REV=419e7b76CdrmRG_NZ8LKj9DUUBGu1w
> >
> >This is a backport of Haroldo Gamal's 2.6 patch that fixes the symlink
> >issue, and also cleans up an unnecessary double assignment. As his
> >commit message notes, you will need the userspace patches from Samba
> >Bug #999 in order to use the permission/ownership assigned by the
> >server.
> 
> Server-side:
> grant@...tree:/home/other$ uname -r
> 2.6.19.2a
> grant@...tree:/home/other$ ls -l
> total 8
> drwxr-xr-x 2 root  root  96 2007-01-21 11:44 dir/
> lrwxrwxrwx 1 root  root   3 2007-01-21 11:43 dirlink -> dir/
> -rw-r--r-- 1 root  root  15 2007-01-21 11:43 file
> lrwxrwxrwx 1 root  root   4 2007-01-21 11:44 filelink -> file
> -rw-r--r-- 1 grant wheel 20 2007-01-24 10:24 test
> lrwxrwxrwx 1 grant wheel  4 2007-01-24 10:23 testlink -> test
> 
> Client-side, 2.4.34c is with this new patch, 2.4.33.3 and 2.6.19.2 
> for comparison:
> 
> grant@...pro:/home/other$ uname -r
> 2.4.33.3
> grant@...pro:/home/other$ ls -l
> total 4096
> drwxr-xr-x 1 root  root   0 2007-01-21 11:44 dir/
> lrwxrwxrwx 1 root  root   3 2007-01-21 11:43 dirlink -> dir/
> -rw-r--r-- 1 root  root  15 2007-01-21 11:43 file
> lrwxrwxrwx 1 root  root   4 2007-01-21 11:44 filelink -> file
> -rw-r--r-- 1 grant wheel 20 2007-01-24 10:24 test
> lrwxrwxrwx 1 grant wheel  4 2007-01-24 10:23 testlink -> test
> 
> grant@...pro:~$ uname -r
> 2.6.19.2a
> grant@...pro:~$ ls -l /home/other/
> total 10
> drwxr-xr-x 1 grant wheel  0 2007-01-21 11:44 dir/
> lrwxr-xr-x 1 grant wheel  3 2007-01-21 11:43 dirlink -> dir/
> -rwxr-xr-x 1 grant wheel 15 2007-01-21 11:43 file*
> lrwxr-xr-x 1 grant wheel  4 2007-01-21 11:44 filelink -> file*
> -rwxr-xr-x 1 grant wheel 20 2007-01-24 10:24 test*
> lrwxr-xr-x 1 grant wheel  4 2007-01-24 10:23 testlink -> test*
> 
> grant@...pro:~$ uname -r
> 2.4.34c
> grant@...pro:~$ ls -l /home/other/
> total 4096
> drwxr-xr-x 1 grant wheel  0 2007-01-21 11:44 dir/
> lrwxr-xr-x 1 grant wheel  3 2007-01-21 11:43 dirlink -> dir/
> -rwxr-xr-x 1 grant wheel 15 2007-01-21 11:43 file*
> lrwxr-xr-x 1 grant wheel  4 2007-01-21 11:44 filelink -> file*
> -rwxr-xr-x 1 grant wheel 20 2007-01-24 10:24 test*
> lrwxr-xr-x 1 grant wheel  4 2007-01-24 10:23 testlink -> test*

Great, that's what I'd expect. If you patch your userspace, you can
avoid the executable bits.


-- 
dann frazier

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