linux-kernel - Re: [PATCH] can: j1939: fix memory leak of skbs

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Date:   Mon, 8 Aug 2022 09:56:45 +0200
From:   Marc Kleine-Budde <mkl@...gutronix.de>
To:     Fedor Pchelkin <pchelkin@...ras.ru>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>,
        Robin van der Gracht <robin@...tonic.nl>,
        kernel@...gutronix.de, Oliver Hartkopp <socketcan@...tkopp.net>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-can@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        ldv-project@...uxtesting.org,
        Alexey Khoroshilov <khoroshilov@...ras.ru>
Subject: Re: [PATCH] can: j1939: fix memory leak of skbs

On 05.08.2022 18:02:16, Fedor Pchelkin wrote:
> We need to drop skb references taken in j1939_session_skb_queue() when
> destroying a session in j1939_session_destroy(). Otherwise those skbs
> would be lost.
> 
> Link to Syzkaller info and repro: https://forge.ispras.ru/issues/11743.
> 
> Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
> 
> Fixes: 9d71dd0c7009 ("can: add support of SAE J1939 protocol")
> Suggested-by: Oleksij Rempel <o.rempel@...gutronix.de>
> Signed-off-by: Fedor Pchelkin <pchelkin@...ras.ru>
> Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>

Added to can/master

Thanks,
Marc

-- 
Pengutronix e.K.                 | Marc Kleine-Budde           |
Embedded Linux                   | https://www.pengutronix.de  |
Vertretung West/Dortmund         | Phone: +49-231-2826-924     |
Amtsgericht Hildesheim, HRA 2686 | Fax:   +49-5121-206917-5555 |

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