1 files changed, 4 insertions, 0 deletions

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index eeb0ce2d5d37..59fd7fe377e0 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -581,6 +581,10 @@ void mesh_rx_path_sel_frame(struct ieee80211_sub_if_data *sdata,
         size_t baselen;
         u32 last_hop_metric;
 
+        /* need action_code */
+        if (len < IEEE80211_MIN_ACTION_SIZE + 1)
+                return;
+
         baselen = (u8 *) mgmt->u.action.u.mesh_action.variable - (u8 *) mgmt;
         ieee802_11_parse_elems(mgmt->u.action.u.mesh_action.variable,
                         len - baselen, &elems);