1 files changed, 6 insertions, 2 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 84f01ba81a34..0f28a9e0b8ad 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2444,8 +2444,12 @@ static void skb_update_prio(struct sk_buff *skb)
 {
         struct netprio_map *map = rcu_dereference_bh(skb->dev->priomap);
 
-        if ((!skb->priority) && (skb->sk) && map)
-                skb->priority = map->priomap[skb->sk->sk_cgrp_prioidx];
+        if (!skb->priority && skb->sk && map) {
+                unsigned int prioidx = skb->sk->sk_cgrp_prioidx;
+
+                if (prioidx < map->priomap_len)
+                        skb->priority = map->priomap[prioidx];
+        }
 }
 #else
 #define skb_update_prio(skb)