linux-kernel - Re: [Bug Report] OOB-read BUG in HFS+ filesystem

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Message-ID: <20250414162328.GD16750@twin.jikos.cz>
Date: Mon, 14 Apr 2025 18:23:28 +0200
From: David Sterba <dsterba@...e.cz>
To: Matthew Wilcox <willy@...radead.org>
Cc: Christian Brauner <brauner@...nel.org>,
	now4yreal <now4yreal@...mail.com>, Jan Kara <jack@...e.com>,
	Viro <viro@...iv.linux.org.uk>, Bacik <josef@...icpanda.com>,
	Stone <leocstone@...il.com>, Sandeen <sandeen@...hat.com>,
	Johnson <jeff.johnson@....qualcomm.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [Bug Report] OOB-read BUG in HFS+ filesystem

On Mon, Apr 14, 2025 at 03:21:56PM +0100, Matthew Wilcox wrote:
> On Mon, Apr 14, 2025 at 04:18:27PM +0200, Christian Brauner wrote:
> > On Mon, Apr 14, 2025 at 09:45:25PM +0800, now4yreal wrote:
> > > Dear Linux Security Maintainers,
> > > I would like to report a OOB-read vulnerability in the HFS+ file
> > > system, which I discovered using our in-house developed kernel fuzzer,
> > > Symsyz.
> > 
> > Bug reports from non-official syzbot instances are generally not
> > accepted.
> > 
> > hfs and hfsplus are orphaned filesystems since at least 2014. Bug
> > reports for such filesystems won't receive much attention from the core
> > maintainers.
> > 
> > I'm very very close to putting them on the chopping block as they're
> > slowly turning into pointless burdens.
> 
> I've tried asking some people who are long term Apple & Linux people,
> but haven't been able to find anyone interested in becoming maintainer.
> Let's drop both hfs & hfsplus.  Ten years of being unmaintained is
> long enough.

Agreed. If needed there are FUSE implementations to access .dmg files
with HFS/HFS+ or other standalone tools.

https://github.com/0x09/hfsfuse
https://github.com/darlinghq/darling-dmg