Re: [PATCH net-next v3 5/9] net: ieee802154: do not leave a dangling sk pointer in ieee802154_create()

On Mon, Oct 14, 2024 at 11:35 PM Kuniyuki Iwashima [off-list ref] wrote:

From: Ignat Korchagin <redacted>
Date: Mon, 14 Oct 2024 16:38:04 +0100

quoted

sock_init_data() attaches the allocated sk object to the provided sock
object. If ieee802154_create() fails later, the allocated sk object is
freed, but the dangling pointer remains in the provided sock object, which
may allow use-after-free.

Clear the sk pointer in the sock object on error.

Signed-off-by: Ignat Korchagin <redacted>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>

Reviewed-by: Kuniyuki Iwashima <redacted>

Reviewed-by: Eric Dumazet <redacted>