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

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This commit is contained in:
Lennart Poettering 2020-11-10 18:45:28 +01:00
parent 8d186a35cb
commit b52eac2010
1 changed files with 2 additions and 1 deletions
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3
src/resolve/resolved-dns-transaction.c
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@ -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. */