Pablo Neira Ayuso 500193142a netfilter: nft_payload: do not update layer 4 checksum when mangling fragments
[ Upstream commit 4e1860a3863707e8177329c006d10f9e37e097a8 ]

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: Sasha Levin <sashal@kernel.org>
2022-01-27 11:03:51 +01:00
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