netdev - Re: net: ipv6: raw: fixes null pointer deference in rawv6_push_pending

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Message-ID: <20230106145553.6dd014f1@kernel.org>
Date:   Fri, 6 Jan 2023 14:55:53 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Kyle Zeng <zengyhkyle@...il.com>
Cc:     davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org,
        edumazet@...gle.com, pabeni@...hat.com, netdev@...r.kernel.org
Subject: Re: net: ipv6: raw: fixes null pointer deference in
 rawv6_push_pending_frames

On Fri, 6 Jan 2023 14:19:52 -0700 Kyle Zeng wrote:
> It is posible that the skb_queue_walkloop does not assign csum_skb to a real skb.

Not immediately obvious to me how that could happen given prior checks
in this function.