---

yaml --- r: 277945 b: refs/heads/master c: 8b7342d h: refs/heads/master i: 277943: 6cc522b v: v3
git-mirror · Nov 20, 2011 · 8ea9025 · 8ea9025
1 parent 25f799c
commit 8ea9025
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: dc58fe32e6a4fbd270e8f045225ce475073d0772
+refs/heads/master: 8b7342d673d31e7aa60baae35321c11532275cdb
diff --git a/trunk/net/batman-adv/routing.c b/trunk/net/batman-adv/routing.c
@@ -578,6 +578,7 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
 {
 	struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface);
 	struct tt_query_packet *tt_query;
+	uint16_t tt_len;
 	struct ethhdr *ethhdr;
 
 	/* drop packet if it has not necessary minimum size */
@@ -622,6 +623,14 @@ int recv_tt_query(struct sk_buff *skb, struct hard_iface *recv_if)
 			if (skb_linearize(skb) < 0)
 				goto out;
 
+			tt_len = tt_query->tt_data * sizeof(struct tt_change);
+
+			/* Ensure we have all the claimed data */
+			if (unlikely(skb_headlen(skb) <
+					sizeof(struct tt_query_packet) +
+					tt_len))
+				goto out;
+
 			handle_tt_response(bat_priv, tt_query);
 		} else {
 			bat_dbg(DBG_TT, bat_priv,