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netfilter: nft_set_hash: bogus element self comparison from deactivation path

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Use the element from the loop iteration, not the same element we want to
deactivate otherwise this branch always evaluates true.

Fixes: 6c03ae210c ("netfilter: nft_set_hash: add non-resizable hashtable implementation")
Reported-by: Florian Westphal <fw@strlen.de>
Tested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2019-02-25 14:13:42 +01:00
parent 3b02b0adc2
commit a01cbae57e
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nft_set_hash.c
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@ -541,7 +541,7 @@ static void *nft_hash_deactivate(const struct net *net,
hash = nft_jhash(set, priv, &this->ext);
hlist_for_each_entry(he, &priv->table[hash], node) {
if (!memcmp(nft_set_ext_key(&this->ext), &elem->key.val,
if (!memcmp(nft_set_ext_key(&he->ext), &elem->key.val,
set->klen) &&
nft_set_elem_active(&he->ext, genmask)) {
nft_set_elem_change_active(net, set, &he->ext);