netfilter: nf_tables: release batch on table validation from abort path

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commit a45e688957 upstream.

Unlike early commit path stage which triggers a call to abort, an
explicit release of the batch is required on abort, otherwise mutex is
released and commit_list remains in place.

Add WARN_ON_ONCE to ensure commit_list is empty from the abort path
before releasing the mutex.

After this patch, commit_list is always assumed to be empty before
grabbing the mutex, therefore

  03c1f1ef15 ("netfilter: Cleanup nft_net->module_list from nf_tables_exit_net()")

only needs to release the pending modules for registration.

Cc: stable@vger.kernel.org
Fixes: c0391b6ab8 ("netfilter: nf_tables: missing validation from the abort path")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Pablo Neira Ayuso 2024-04-08 23:19:28 +02:00 • committed by Greg Kroah-Hartman

parent 48d6bcfc31

commit 37fc2cde9d

1 changed files with 9 additions and 5 deletions

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net/netfilter/nf_tables_api.c

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