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netfilter: nft_payload: do not update layer 4 checksum when mangling fragments
authorPablo Neira Ayuso <pablo@netfilter.org>
Wed, 5 Jan 2022 15:09:57 +0000 (16:09 +0100)
committerPablo Neira Ayuso <pablo@netfilter.org>
Thu, 6 Jan 2022 09:43:23 +0000 (10:43 +0100)
commit4e1860a3863707e8177329c006d10f9e37e097a8
treec79eb1919de9ee6c97544aae1e9e6224f845ed0ftree
parent1585f590a2e5dcae5833b05e030c47229299dd09commit | diff
netfilter: nft_payload: do not update layer 4 checksum when mangling fragments

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>
net/netfilter/nft_payload.c diff | blob | history
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