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| author | Tim Yi <tim.yi@pica8.com> | 2022-01-27 10:49:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-01 19:27:14 +0300 |
| commit | c5e216e880fa6f2cd9d4a6541269377657163098 (patch) | |
| tree | 53ba38f48380115c8ee831c0ef0394f01312eccf /net/bridge | |
| parent | 8861857ccc9dcfb7f30980f494689d517b75731d (diff) | |
| download | linux-c5e216e880fa6f2cd9d4a6541269377657163098.tar.xz | |
net: bridge: vlan: fix memory leak in __allowed_ingress
[ Upstream commit fd20d9738395cf8e27d0a17eba34169699fccdff ]
When using per-vlan state, if vlan snooping and stats are disabled,
untagged or priority-tagged ingress frame will go to check pvid state.
If the port state is forwarding and the pvid state is not
learning/forwarding, untagged or priority-tagged frame will be dropped
but skb memory is not freed.
Should free skb when __allowed_ingress returns false.
Fixes: a580c76d534c ("net: bridge: vlan: add per-vlan state")
Signed-off-by: Tim Yi <tim.yi@pica8.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/20220127074953.12632-1-tim.yi@pica8.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/bridge')
| -rw-r--r-- | net/bridge/br_vlan.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index 06f5caee495a..10e63ea6a13e 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -560,10 +560,10 @@ static bool __allowed_ingress(const struct net_bridge *br, !br_opt_get(br, BROPT_VLAN_STATS_ENABLED)) { if (*state == BR_STATE_FORWARDING) { *state = br_vlan_get_pvid_state(vg); - return br_vlan_state_allowed(*state, true); - } else { - return true; + if (!br_vlan_state_allowed(*state, true)) + goto drop; } + return true; } } v = br_vlan_find(vg, *vid); |