linux-kernel - Re: [PATCH] ext4: fix kernel infoleak via ext4_extent

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Message-ID: <YJQ8WzDhqpCesoV4@anirudhrb.com>
Date:   Fri, 7 May 2021 00:28:35 +0530
From:   Anirudh Rayabharam <mail@...rudhrb.com>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>,
        gregkh@...uxfoundation.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        syzbot+2dcfeaf8cb49b05e8f1a@...kaller.appspotmail.com,
        linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ext4: fix kernel infoleak via ext4_extent_header

On Wed, May 05, 2021 at 09:19:44AM -0700, Eric Biggers wrote:
> On Wed, May 05, 2021 at 07:00:10PM +0530, Anirudh Rayabharam wrote:
> > Initialize eh_generation of struct ext4_extent_header to prevent leaking
> > info to userspace. Fixes KMSAN kernel-infoleak bug reported by syzbot at:
> > http://syzkaller.appspot.com/bug?id=78e9ad0e6952a3ca16e8234724b2fa92d041b9b8
> > 
> > Reported-by: syzbot+2dcfeaf8cb49b05e8f1a@...kaller.appspotmail.com
> > Signed-off-by: Anirudh Rayabharam <mail@...rudhrb.com>
> 
> Can you include a "Fixes:" tag?

Sent v2!

Thanks!

	- Anirudh.

> 
> - Eric