+++ /dev/null
-From d4f2e0b8d8f0b5daa0d468f62a0d5f1df58ac325 Mon Sep 17 00:00:00 2001
-From: Doran Moppert <dmoppert@redhat.com>
-Date: Tue, 26 Sep 2017 14:48:20 +0930
-Subject: [PATCH 9/9] google patch hand-applied
-
----
- src/edns0.c | 10 +++++-----
- src/forward.c | 4 ++++
- src/rfc1035.c | 6 ++++--
- 3 files changed, 13 insertions(+), 7 deletions(-)
-
-diff --git a/src/edns0.c b/src/edns0.c
-index 0552d38..bec4a36 100644
---- a/src/edns0.c
-+++ b/src/edns0.c
-@@ -212,11 +212,11 @@ size_t add_pseudoheader(struct dns_header *header, size_t plen, unsigned char *l
- /* Copy back any options */
- if (buff)
- {
-- if (p + rdlen > limit)
-- {
-- free(buff);
-- return plen; /* Too big */
-- }
-+ if (p + rdlen > limit)
-+ {
-+ free(buff);
-+ return plen; /* Too big */
-+ }
- memcpy(p, buff, rdlen);
- free(buff);
- p += rdlen;
-diff --git a/src/forward.c b/src/forward.c
-index 0f8f462..a729c06 100644
---- a/src/forward.c
-+++ b/src/forward.c
-@@ -1412,6 +1412,10 @@ void receive_query(struct listener *listen, time_t now)
- udp_size = PACKETSZ; /* Sanity check - can't reduce below default. RFC 6891 6.2.3 */
- }
-
-+ // Make sure the udp size is not smaller than the incoming message so that we
-+ // do not underflow
-+ if (udp_size < n) udp_size = n;
-+
- #ifdef HAVE_AUTH
- if (auth_dns)
- {
-diff --git a/src/rfc1035.c b/src/rfc1035.c
-index 917bac2..ae65702 100644
---- a/src/rfc1035.c
-+++ b/src/rfc1035.c
-@@ -1182,8 +1182,8 @@ int add_resource_record(struct dns_header *header, char *limit, int *truncp, int
- va_end(ap); /* clean up variable argument pointer */
-
- j = p - sav - 2;
-- /* this has already been checked against limit before */
-- PUTSHORT(j, sav); /* Now, store real RDLength */
-+ /* this has already been checked against limit before */
-+ PUTSHORT(j, sav); /* Now, store real RDLength */
-
- /* check for overflow of buffer */
- if (limit && ((unsigned char *)limit - p) < 0)
-@@ -1243,6 +1243,8 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
- int nxdomain = 0, auth = 1, trunc = 0, sec_data = 1;
- struct mx_srv_record *rec;
- size_t len;
-+ // Make sure we do not underflow here too.
-+ if (qlen > (limit - ((char *)header))) return 0;
-
- if (ntohs(header->ancount) != 0 ||
- ntohs(header->nscount) != 0 ||
---
-2.9.5
-