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Date:   Mon, 28 Dec 2020 15:03:38 -0800 (PST)
From:   David Miller <>
Subject: Re: [PATCH] ipv6: Prevent overrun when parsing v6 header options

From: Defang Bo <>
Date: Sun, 27 Dec 2020 22:11:35 +0800

> Similar to commit<2423496af35>, the fragmentation code tries to parse the header options in order
> to figure out where to insert the fragment option.  Since nexthdr points
> to an invalid option, the calculation of the size of the network header
> can made to be much larger than the linear section of the skb and data
> is read outside of it.
> Signed-off-by: Defang Bo <>

Could you please repost this with a proper Fixes: tag, thank you.

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