resolved: paranoia — ensure DNS reply came over stream we sent it to

2021-02-16 17:43:27 +01:00
parent 8d186a35cb
commit b52eac2010
1 changed files with 2 additions and 1 deletions
@@ -630,7 +630,8 @@ static int on_stream_packet(DnsStream *s) {
        assert_se(p = dns_stream_take_read_packet(s));

        t = hashmap_get(s->manager->dns_transactions, UINT_TO_PTR(DNS_PACKET_ID(p)));
-        if (t)
+        if (t && t->stream == s) /* Validate that the stream we got this on actually is the stream the
+                                  * transaction was using. */
                return dns_transaction_on_stream_packet(t, s, p);

        /* Ignore incorrect transaction id as an old transaction can have been canceled. */