From c9ef4a10d6f6633cf470d6a469514b68fa2be234 Mon Sep 17 00:00:00 2001
From: Tatu Saloranta <tatu.saloranta@iki.fi>
Date: Wed, 12 Jun 2019 22:20:12 -0700
Subject: [PATCH] Fix #2334

---
 .../jackson/databind/jsontype/impl/SubTypeValidator.java       | 3 +++
 1 files changed, 3 insertions(+)

diff --git a/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java b/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java
index 08b541747e..102abb6e24 100644
--- a/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java
+++ b/src/main/java/com/fasterxml/jackson/databind/jsontype/impl/SubTypeValidator.java
@@ -80,9 +80,11 @@ public class SubTypeValidator
         s.add("org.apache.openjpa.ee.JNDIManagedRuntime");
         s.add("org.apache.axis2.transport.jms.JMSOutTransportInfo");
 
-        // [databind#2326] (2.9.9): one more 3rd party gadget
+        // [databind#2326] (2.9.9)
         s.add("com.mysql.cj.jdbc.admin.MiniAdmin");
 
+        // [databind#2334] (2.9.9.1): logback-core
+        s.add("ch.qos.logback.core.db.DriverManagerConnectionSource");
         DEFAULT_NO_DESER_CLASS_NAMES = Collections.unmodifiableSet(s);
     }
 
