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]
Message-Id: <20061102112741.e1bb88c9.akpm@osdl.org>
Date:	Thu, 2 Nov 2006 11:27:41 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Andreas Gruenbacher <agruen@...e.de>
Cc:	linux-kernel@...r.kernel.org, Gerard Neil <xyzzy@...ferret.org>,
	Dave Kleikamp <shaggy@...tin.ibm.com>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: [PATCH] Fix user.* xattr permission check for sticky dirs

On Thu, 2 Nov 2006 17:24:02 +0100
Andreas Gruenbacher <agruen@...e.de> wrote:

> The user.* extended attributes are only allowed on regular files and
> directories. Sticky directories further restrict write access to the
> owner and privileged users. (See the attr(5) man page for an
> explanation.)
> 
> The original check in ext2/ext3 when user.* xattrs were merged was more
> restrictive than intended, and when the xattr permission checks were moved 
> into the VFS, read access to user.* attributes on sticky directores ended up
> being denied in addition.

Am struggling to understand the impact of this.  I assume this problem was
introduced on Jan 9 by e0ad7b073eb7317e5afe0385b02dcb1d52a1eedf "move xattr
permission checks into the VFS"?

If so, the fix is applicable to 2.6.18, 2.6.19 and of course 2.6.20.

But to which of those should it be applied?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ