From 30d9662bd780e298516d514984ced1f88ec5bc3b Mon Sep 17 00:00:00 2001
From: Gregory Maxwell <greg@xiph.org>
Date: Thu, 29 Oct 2015 18:24:49 +0000
Subject: [PATCH] Reject invalid pubkeys when reading ckey items from the
 wallet.

This makes the behavior more consistent with key objects and will
 reject some corrupted pubkeys (e.g. zero length).
---
 src/wallet/walletdb.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index 0624e442d16..ea8a4eb043c 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -512,8 +512,13 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
         }
         else if (strType == "ckey")
         {
-            vector<unsigned char> vchPubKey;
+            CPubKey vchPubKey;
             ssKey >> vchPubKey;
+            if (!vchPubKey.IsValid())
+            {
+                strErr = "Error reading wallet database: CPubKey corrupt";
+                return false;
+            }
             vector<unsigned char> vchPrivKey;
             ssValue >> vchPrivKey;
             wss.nCKeys++;