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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Dmitry Antipov <dmantipov@yandex.ru>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
	linux-usb@vger.kernel.org, lvc-project@linuxtesting.org,
	syzbot+6aa97991da41499aa852@syzkaller.appspotmail.com,
	stable@vger.kernel.org
Subject: Re: [PATCH] usb: gadget: fix device data management error in gadgetfs_bind()
Date: Mon, 3 Aug 2026 11:15:48 +0200	[thread overview]
Message-ID: <2026080336-roast-sudden-e02e@gregkh> (raw)
In-Reply-To: <20260803091258.85969-1-dmantipov@yandex.ru>

On Mon, Aug 03, 2026 at 12:12:58PM +0300, Dmitry Antipov wrote:
> In 'gadgetfs_bind()', 'get_dev()' on appropriate 'struct dev_data'
> instance should be performed immediately after the pointer is stored.
> Otherwise an attempt to handle -ENOMEM later will issue an unbalanced
> 'put_dev()' in 'gadgetfs_unbind()', thus leading to UAF errors.
> 
> Reported-by: syzbot+6aa97991da41499aa852@syzkaller.appspotmail.com
> Closes: https://syzkaller.appspot.com/bug?extid=6aa97991da41499aa852
> Cc: stable@vger.kernel.org
> Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
> ---
>  drivers/usb/gadget/legacy/inode.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

What commit id does this fix?

thanks,

greg k-h

  reply	other threads:[~2026-08-03  9:16 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-03  9:12 [PATCH] usb: gadget: fix device data management error in gadgetfs_bind() Dmitry Antipov
2026-08-03  9:15 ` Greg Kroah-Hartman [this message]
2026-08-03 10:33   ` Dmitry Antipov
2026-08-03 12:24     ` Greg Kroah-Hartman
2026-08-03 13:08       ` Dmitry Antipov
2026-08-03 12:25     ` Greg Kroah-Hartman
2026-08-03 13:13       ` Dmitry Antipov
2026-08-03 13:26         ` Greg Kroah-Hartman
2026-08-03 13:36           ` Greg Kroah-Hartman
2026-08-03 14:05             ` Alan Stern

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