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Message-ID: <20241014213228.98842-1-kuniyu@amazon.com>
Date: Mon, 14 Oct 2024 14:32:28 -0700
From: Kuniyuki Iwashima <kuniyu@...zon.com>
To: <ignat@...udflare.com>
CC: <alex.aring@...il.com>, <alibuda@...ux.alibaba.com>,
<davem@...emloft.net>, <dsahern@...nel.org>, <edumazet@...gle.com>,
<johan.hedberg@...il.com>, <kernel-team@...udflare.com>, <kuba@...nel.org>,
<kuniyu@...zon.com>, <linux-bluetooth@...r.kernel.org>,
<linux-can@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-wpan@...r.kernel.org>, <luiz.dentz@...il.com>,
<mailhol.vincent@...adoo.fr>, <marcel@...tmann.org>,
<miquel.raynal@...tlin.com>, <mkl@...gutronix.de>, <netdev@...r.kernel.org>,
<pabeni@...hat.com>, <socketcan@...tkopp.net>, <stefan@...enfreihafen.org>,
<willemdebruijn.kernel@...il.com>
Subject: Re: [PATCH net-next v3 4/9] net: af_can: do not leave a dangling sk pointer in can_create()
From: Ignat Korchagin <ignat@...udflare.com>
Date: Mon, 14 Oct 2024 16:38:03 +0100
> 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: Kuniyuki Iwashima <kuniyu@...zon.com>
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