linux-kernel - Re: [PATCH net-next v3 4/9] net: af_can: do not leave a dangling sk pointer in can

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Message-ID: <20241015-fast-smilodon-of-maturity-c983eb-mkl@pengutronix.de>
Date: Tue, 15 Oct 2024 08:21:28 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: Ignat Korchagin <ignat@...udflare.com>
Cc: "David S. Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Marcel Holtmann <marcel@...tmann.org>, Johan Hedberg <johan.hedberg@...il.com>, 
	Luiz Augusto von Dentz <luiz.dentz@...il.com>, Oliver Hartkopp <socketcan@...tkopp.net>, 
	Alexander Aring <alex.aring@...il.com>, Stefan Schmidt <stefan@...enfreihafen.org>, 
	Miquel Raynal <miquel.raynal@...tlin.com>, David Ahern <dsahern@...nel.org>, 
	Willem de Bruijn <willemdebruijn.kernel@...il.com>, linux-bluetooth@...r.kernel.org, linux-can@...r.kernel.org, 
	linux-wpan@...r.kernel.org, kernel-team@...udflare.com, kuniyu@...zon.com, 
	alibuda@...ux.alibaba.com, Vincent Mailhol <mailhol.vincent@...adoo.fr>
Subject: Re: [PATCH net-next v3 4/9] net: af_can: do not leave a dangling sk
 pointer in can_create()

On 14.10.2024 16:38:03, Ignat Korchagin wrote:
> On error can_create() frees the allocated sk object, but sock_init_data()
> has already attached it to the provided sock object. This will leave a
> dangling sk pointer in the sock object and may cause use-after-free later.
> 
> Signed-off-by: Ignat Korchagin <ignat@...udflare.com>
> Reviewed-by: Vincent Mailhol <mailhol.vincent@...adoo.fr>

Reviewed-by: Marc Kleine-Budde <mkl@...gutronix.de>

regards,
Marc

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