From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Tue, 27 Nov 2018 16:16:33 +0000 (+0100)
Subject: fuzzing: Skip payloads larger than 65k
X-Git-Tag: auth-4.2.0-alpha1~6^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8ffb27d63cc7329b7b949e9e6fe738079e16ab3;p=thirdparty%2Fpdns.git

fuzzing: Skip payloads larger than 65k
---

diff --git a/pdns/fuzz_dnsdistcache.cc b/pdns/fuzz_dnsdistcache.cc
index d9c8efa717..8b2ed7d1fe 100644
--- a/pdns/fuzz_dnsdistcache.cc
+++ b/pdns/fuzz_dnsdistcache.cc
@@ -24,6 +24,10 @@
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
 
+  if (size > std::numeric_limits<uint16_t>::max()) {
+    return 0;
+  }
+
   /* dnsdist's version */
   try {
     uint16_t qtype;
diff --git a/pdns/fuzz_moadnsparser.cc b/pdns/fuzz_moadnsparser.cc
index cf9660ec7d..ea5fe25e9f 100644
--- a/pdns/fuzz_moadnsparser.cc
+++ b/pdns/fuzz_moadnsparser.cc
@@ -39,6 +39,10 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
     initialized = true;
   }
 
+  if (size > std::numeric_limits<uint16_t>::max()) {
+    return 0;
+  }
+
   try {
     MOADNSParser moaQuery(true, reinterpret_cast<const char*>(data), size);
   }
diff --git a/pdns/fuzz_packetcache.cc b/pdns/fuzz_packetcache.cc
index b8d9f22616..faea016920 100644
--- a/pdns/fuzz_packetcache.cc
+++ b/pdns/fuzz_packetcache.cc
@@ -27,6 +27,10 @@ StatBag S;
 
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
 
+  if (size > std::numeric_limits<uint16_t>::max()) {
+    return 0;
+  }
+
   std::string input(reinterpret_cast<const char*>(data), size);
 
   /* auth's version */