4.4-stable review patch. If anyone has any objections, please let me know.
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From: Jeffy Chen jeffy.chen@rock-chips.com
[ Upstream commit f83bf8da1135ca635aac8f062cad3f001fcf3a26 ]
We have memory leaks of nf_conntrack_helper & expect_policy.
Signed-off-by: Jeffy Chen jeffy.chen@rock-chips.com Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/netfilter/nfnetlink_cthelper.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
--- a/net/netfilter/nfnetlink_cthelper.c +++ b/net/netfilter/nfnetlink_cthelper.c @@ -216,7 +216,7 @@ nfnl_cthelper_create(const struct nlattr
ret = nfnl_cthelper_parse_expect_policy(helper, tb[NFCTH_POLICY]); if (ret < 0) - goto err; + goto err1;
strncpy(helper->name, nla_data(tb[NFCTH_NAME]), NF_CT_HELPER_NAME_LEN); helper->data_len = ntohl(nla_get_be32(tb[NFCTH_PRIV_DATA_LEN])); @@ -247,10 +247,12 @@ nfnl_cthelper_create(const struct nlattr
ret = nf_conntrack_helper_register(helper); if (ret < 0) - goto err; + goto err2;
return 0; -err: +err2: + kfree(helper->expect_policy); +err1: kfree(helper); return ret; } @@ -696,6 +698,8 @@ nfnl_cthelper_del(struct sock *nfnl, str
found = true; nf_conntrack_helper_unregister(cur); + kfree(cur->expect_policy); + kfree(cur); } } /* Make sure we return success if we flush and there is no helpers */ @@ -759,6 +763,8 @@ static void __exit nfnl_cthelper_exit(vo continue;
nf_conntrack_helper_unregister(cur); + kfree(cur->expect_policy); + kfree(cur); } } }