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

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Date:	Mon, 22 Jan 2007 09:52:44 +1100
From:	Grant Coady <grant_lkml@...o.com.au>
To:	dann frazier <dannf@...nf.org>
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 Fri, 19 Jan 2007 18:05:44 -0700, dann frazier <dannf@...nf.org> wrote:

>On Thu, Jan 18, 2007 at 06:00:40PM -0700, dann frazier wrote:
>Ah, think I see the problem now:
>
>--- kernel-source-2.4.27.orig/fs/smbfs/proc.c	2007-01-19 17:53:57.247695476 -0700
>+++ kernel-source-2.4.27/fs/smbfs/proc.c	2007-01-19 17:49:07.480161733 -0700
>@@ -1997,7 +1997,7 @@
> 		fattr->f_mode = (server->mnt->dir_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) | S_IFDIR;
> 	else if ( (server->mnt->flags & SMB_MOUNT_FMODE) &&
> 	          !(S_ISDIR(fattr->f_mode)) )
>-		fattr->f_mode = (server->mnt->file_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) | S_IFREG;
>+		fattr->f_mode = (server->mnt->file_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) | (fattr->f_mode & S_IFMT);
> 
> }
> 
client running 2.4.34 with above patch, server is running 2.6.19.2 to 
eliminate it from the problem space (hopefully ;) :
grant@...pro:/home/other$ uname -r
2.4.34b
grant@...pro:/home/other$ ls -l
total 9
drwxr-xr-x 1 grant wheel 4096 2007-01-21 11:44 dir/
drwxr-xr-x 1 grant wheel 4096 2007-01-21 11:44 dirlink/
-rwxr-xr-x 1 grant wheel   15 2007-01-21 11:43 file*
-rwxr-xr-x 1 grant wheel   15 2007-01-21 11:43 filelink*
grant@...pro:/home/other$ ls -l dirlink/
total 1
-rwxr-xr-x 1 grant wheel 15 2007-01-21 11:44 file*
-rwxr-xr-x 1 grant wheel 15 2007-01-21 11:44 filelink*
grant@...pro:/home/other$

problem is still there :(

With client 2.4.33.3 (slackware-11 distro kernel):
grant@...pro:/home/other$ uname -r
2.4.33.3
grant@...pro:/home/other$ ls -l
total 2048
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
grant@...pro:/home/other$ ls -l dirlink/
total 2048
-rw-r--r-- 1 root root 15 2007-01-21 11:44 file
lrwxrwxrwx 1 root root  4 2007-01-21 11:44 filelink -> file
grant@...pro:/home/other$ cat filelink
this is a test

No problem with symlinks, execute flag.

Grant.
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