diff options
| author | Hangyu Hua <hbh25y@gmail.com> | 2023-02-10 15:17:30 +0800 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2023-02-22 00:06:19 +0100 |
| commit | ac4893980bbe79ce383daf9a0885666a30fe4c83 (patch) | |
| tree | 594265fb4ae7f9ca17d9da5dca0f8b36a4b12cef /net | |
| parent | 92f3e96d642f5e05b9dc710c06fedc669f1b4f00 (diff) | |
netfilter: ctnetlink: fix possible refcount leak in ctnetlink_create_conntrack()
nf_ct_put() needs to be called to put the refcount got by
nf_conntrack_find_get() to avoid refcount leak when
nf_conntrack_hash_check_insert() fails.
Fixes: 7d367e06688d ("netfilter: ctnetlink: fix soft lockup when netlink adds new entries (v2)")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/netfilter/nf_conntrack_netlink.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 1286ae7d4609..ca4d5bb1ea52 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -2375,12 +2375,15 @@ ctnetlink_create_conntrack(struct net *net, err = nf_conntrack_hash_check_insert(ct); if (err < 0) - goto err2; + goto err3; rcu_read_unlock(); return ct; +err3: + if (ct->master) + nf_ct_put(ct->master); err2: rcu_read_unlock(); err1: |