diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-01-16 13:09:31 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2020-01-16 14:22:32 +0100 |
| commit | cd77e75b5e4632d05d61fec5383052713c8ede2b (patch) | |
| tree | 71683e0bc3c4cc4fb380baa4101c12d95ffcf816 /net | |
| parent | 9332d27d7918182add34e8043f6a754530fdd022 (diff) | |
| download | linux-cd77e75b5e4632d05d61fec5383052713c8ede2b.tar.bz2 | |
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.c | 1 |
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; } |