linux-kernel - Re: [Patch 0/4] Fix error handling in hfsplus mount failure paths

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]

Date:	Tue, 1 Feb 2011 23:07:45 +0100
From:	Christoph Hellwig <hch@....de>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	Christoph Hellwig <hch@...era.com>, linux-kernel@...r.kernel.org
Subject: Re: [Patch 0/4] Fix error handling in hfsplus mount failure paths

On Tue, Feb 01, 2011 at 04:28:02PM -0500, Chuck Ebbert wrote:
> hfsplus can generate NULL pointer exceptions when a user attempts
> to mount an invalid filesystem. In some paths it also leaks memory.
> 
> This series attempts to fix some of the most obvious problems.

Not in a very nice way, though.  The real problem here is that we

 a) can still return a failure after sb->s_root is set
 b) abuse hfsplus_put_super for error handling, which is totally
    ill-suited.

Take a look at the patch in
https://bugzilla.kernel.org/show_bug.cgi?id=27932 for a proper fix.
--
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/