oss-security - Re: CVE request -- kernel: cifs: always do is_path_accessible check in cifs

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Message-ID: <1254374822.1262221.1316026288551.JavaMail.root@zmail01.collab.prod.int.phx2.redhat.com>
Date: Wed, 14 Sep 2011 14:51:28 -0400 (EDT)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Cc: coley@...us.mitre.org, cve-assign@...re.org
Subject: Re: CVE request -- kernel: cifs: always do
 is_path_accessible check in cifs_mount

Please use CVE-2011-3363 for this.

Thanks.

-- 
    JB


----- Original Message -----
> "Currently, we skip doing the is_path_accessible check in cifs_mount
> if
> there is no prefixpath. There is a report of at least one server
> however
> that allows a TREE_CONNECT to a share that has a DFS referral at its
> root. UNC that had no prefixpath was used in that case, so the
> is_path_accessible check was not triggered and the box later hit
> a BUG() because we were chasing a DFS referral on the root dentry for
> the mount."
> 
> Upstream fix:
> 70945643722ffeac779d2529a348f99567fa5c33
> 
> References:
> https://bugzilla.redhat.com/show_bug.cgi?id=682829
> https://github.com/mirrors/linux/commit/70945643722ffeac779d2529a348f99567fa5c33
> 
> Thanks,
> --
> Petr Matousek / Red Hat Security Response Team

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