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netfilter: nft_set_pipapo: skip inactive elements during set walk

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commit 317eb96850 upstream.

Otherwise set elements can be deactivated twice which will cause a crash.

Reported-by: Xingyuan Mo <hdthky0@gmail.com>
Fixes: 3c4287f620 ("nf_tables: Add set type for arbitrary concatenation of ranges")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Florian Westphal 2023-12-01 15:47:13 +01:00 committed by Greg Kroah-Hartman
parent bcedd497b3
commit e65128616f
1 changed files with 3 additions and 0 deletions
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3
net/netfilter/nft_set_pipapo.c
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@ -2042,6 +2042,9 @@ static void nft_pipapo_walk(const struct nft_ctx *ctx, struct nft_set *set,
e = f->mt[r].e;
if (!nft_set_elem_active(&e->ext, iter->genmask))
goto cont;
elem.priv = e;
iter->err = iter->fn(ctx, set, iter, &elem);