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| author | Vlad Buslov <vladbu@mellanox.com> | 2019-02-25 17:28:27 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-02-25 10:13:38 -0800 |
| commit | a3df633a3c92bb96b06552c3f828d7c267774379 (patch) | |
| tree | e88bc2c551807bd0e12efef7635ca866148fd624 | |
| parent | 9919a363a5cb57c2b64c4803b4d2dd45e90bf230 (diff) | |
| download | linux-a3df633a3c92bb96b06552c3f828d7c267774379.tar.gz linux-a3df633a3c92bb96b06552c3f828d7c267774379.tar.bz2 linux-a3df633a3c92bb96b06552c3f828d7c267774379.zip | |
net: sched: act_tunnel_key: fix NULL pointer dereference during init
Metadata pointer is only initialized for action TCA_TUNNEL_KEY_ACT_SET, but
it is unconditionally dereferenced in tunnel_key_init() error handler.
Verify that metadata pointer is not NULL before dereferencing it in
tunnel_key_init error handling code.
Fixes: ee28bb56ac5b ("net/sched: fix memory leak in act_tunnel_key_init()")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/sched/act_tunnel_key.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sched/act_tunnel_key.c b/net/sched/act_tunnel_key.c index 8b43fe0130f7..3f943de9a2c9 100644 --- a/net/sched/act_tunnel_key.c +++ b/net/sched/act_tunnel_key.c @@ -377,7 +377,8 @@ static int tunnel_key_init(struct net *net, struct nlattr *nla, return ret; release_tun_meta: - dst_release(&metadata->dst); + if (metadata) + dst_release(&metadata->dst); err_out: if (exists) |