Re: [PATCH 4.19.y] netfilter: nft_payload: do not update layer 4 checksum when mangling fragments

On Fri, Jan 28, 2022 at 12:38:21PM +0100, Florian Westphal wrote:

From: Pablo Neira Ayuso pablo@netfilter.org

commit 4e1860a3863707e8177329c006d10f9e37e097a8 upstream.

IP fragments do not come with the transport header, hence skip bogus layer 4 checksum updates.

Fixes: 1814096980bb ("netfilter: nft_payload: layer 4 checksum adjustment for pseudoheader fields") Reported-and-tested-by: Steffen Weinreich steve@weinreich.org Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Florian Westphal fw@strlen.de

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This is already in the 5.y branches but 4.19 needs a minor tweak as ->fragoff member resides in xt sub-struct.

I don't see this commit in the 5.10 or 5.4 branches, am I missing something?

confused,

greg k-h