netfilter: nfnetlink_cthelper: hit EBUSY on updates if size mismatches

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[ Upstream commit 8971ee8b08 ]

The private helper data size cannot be updated. However, updates that
contain NFCTH_PRIV_DATA_LEN might bogusly hit EBUSY even if the size is
the same.

Fixes: 12f7a50533 ("netfilter: add user-space connection tracking helper infrastructure")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Pablo Neira Ayuso 2021-05-28 13:45:16 +02:00 • committed by Greg Kroah-Hartman

parent 5f3429c05e

commit 8d614eebc0

1 changed files with 6 additions and 2 deletions

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net/netfilter/nfnetlink_cthelper.c

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