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netfilter: nf_nat: Fix memleak in nf_nat_init 

commit 869f4fdaf4 upstream.

When register_pernet_subsys() fails, nf_nat_bysource
should be freed just like when nf_ct_extend_register()
fails.

Fixes: 1cd472bf03 ("netfilter: nf_nat: add nat hook register functions to nf_nat")
Signed-off-by: Dinghao Liu <dinghao.liu@zju.edu.cn>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Dinghao Liu 2021-01-09 20:01:21 +08:00 committed by Greg Kroah-Hartman
parent 49fc6d92b4
commit 9351148633
1 changed files with 1 additions and 0 deletions
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net/netfilter/nf_nat_core.c
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@ -1174,6 +1174,7 @@ static int __init nf_nat_init(void)
ret = register_pernet_subsys(&nat_net_ops);
if (ret < 0) {
nf_ct_extend_unregister(&nat_extend);
kvfree(nf_nat_bysource);
return ret;
}