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authorDan Carpenter <dan.carpenter@oracle.com>2020-01-16 13:09:31 +0300
committerPablo Neira Ayuso <pablo@netfilter.org>2020-01-16 14:22:32 +0100
commitcd77e75b5e4632d05d61fec5383052713c8ede2b (patch)
tree71683e0bc3c4cc4fb380baa4101c12d95ffcf816 /net
parent9332d27d7918182add34e8043f6a754530fdd022 (diff)
netfilter: nf_tables: fix memory leak in nf_tables_parse_netdev_hooks()
Syzbot detected a leak in nf_tables_parse_netdev_hooks(). If the hook already exists, then the error handling doesn't free the newest "hook". Reported-by: syzbot+f9d4095107fc8749c69c@syzkaller.appspotmail.com Fixes: b75a3e8371bc ("netfilter: nf_tables: allow netdevice to be used only once per flowtable") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-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_tables_api.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index b3692458d428..896a6e8aff91 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1680,6 +1680,7 @@ static int nf_tables_parse_netdev_hooks(struct net *net,
goto err_hook;
}
if (nft_hook_list_find(hook_list, hook)) {
+ kfree(hook);
err = -EEXIST;
goto err_hook;
}

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