From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org
Subject: [PATCH 4/8] Fix bug: sometimes valid entries in hash:* types of sets were evicted
Date: Thu, 23 Feb 2017 12:14:05 +0100 [thread overview]
Message-ID: <1487848449-2731-5-git-send-email-pablo@netfilter.org> (raw)
In-Reply-To: <1487848449-2731-1-git-send-email-pablo@netfilter.org>
From: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Wrong index was used and therefore when shrinking a hash bucket at
deleting an entry, valid entries could be evicted as well.
Thanks to Eric Ewanco for the thorough bugreport.
Fixes netfilter bugzilla #1119
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
---
net/netfilter/ipset/ip_set_hash_gen.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index 1b05d4a7d5a1..f236c0bc7b3f 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -897,7 +897,7 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
continue;
data = ahash_data(n, j, dsize);
memcpy(tmp->value + k * dsize, data, dsize);
- set_bit(j, tmp->used);
+ set_bit(k, tmp->used);
k++;
}
tmp->pos = k;
--
2.1.4
next prev parent reply other threads:[~2017-02-23 11:14 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-23 11:14 [PATCH 0/8] Netfilter fixes for net Pablo Neira Ayuso
2017-02-23 11:14 ` [PATCH 1/8] netfilter: nf_ct_helper: warn when not applying default helper assignment Pablo Neira Ayuso
2017-02-23 11:14 ` [PATCH 2/8] netfilter: ctnetlink: Fix regression in CTA_STATUS processing Pablo Neira Ayuso
2017-02-23 11:14 ` [PATCH 3/8] netfilter: ctnetlink: Fix regression in CTA_HELP processing Pablo Neira Ayuso
2017-02-23 11:14 ` Pablo Neira Ayuso [this message]
2017-02-23 11:14 ` [PATCH 5/8] netfilter: ipset: Null pointer exception in ipset list:set Pablo Neira Ayuso
2017-02-23 11:14 ` [PATCH 6/8] netfilter: xt_hashlimit: Fix integer divide round to zero Pablo Neira Ayuso
2017-02-23 11:14 ` [PATCH 7/8] netfilter: nfnetlink_queue: fix NFQA_VLAN_MAX definition Pablo Neira Ayuso
2017-02-23 11:14 ` [PATCH 8/8] netfilter: nfnetlink: remove static declaration from err_list Pablo Neira Ayuso
2017-02-23 16:00 ` [PATCH 0/8] Netfilter fixes for net David Miller
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