linux-kernel - Re: KASAN: use-after-free Write in snd_rawmidi_kernel

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Date:   Thu, 7 May 2020 10:23:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     butt3rflyh4ck <butterflyhuangxx@...il.com>
Cc:     security@...nel.org, syzkaller <syzkaller@...glegroups.com>,
        tiwai@...e.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org
Subject: Re: KASAN: use-after-free Write in snd_rawmidi_kernel_write1

On Thu, May 07, 2020 at 03:54:34PM +0800, butt3rflyh4ck wrote:
> I report a bug (in linux-5.7-rc1) found by syzkaller.
> 
> kernel config:
> https://github.com/butterflyhack/syzkaller-fuzz/blob/master/v5.7.0-rc1.config
> reproducer:
> https://github.com/butterflyhack/syzkaller-fuzz/blob/master/repro.cprog
> 
> I test the reproducer in linux-5.7-rc4 and crash too.

Same as the other email, patches are best, thansk!

greg k-h