From: Nigel Metheringham <nigel@exim.org>
Date: Mon, 26 Oct 2009 13:18:54 +0000 (+0000)
Subject: Dovecot buffer overrun fix.  Fixes: #889
X-Git-Tag: exim-4_70_RC3~13
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/51473862ca62bf14157e0d7aa957b5a0d41748be

Dovecot buffer overrun fix.  Fixes: #889
---

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index 38260c0a6..d1805a688 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -1,4 +1,4 @@
-$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.581 2009/10/26 13:14:23 nm4 Exp $
+$Cambridge: exim/doc/doc-txt/ChangeLog,v 1.582 2009/10/26 13:18:54 nm4 Exp $
 
 Change log file for Exim from version 4.21
 -------------------------------------------
@@ -136,6 +136,8 @@ NM/29 Bugzilla 862, 866, 875: Documentation bugfixes
 
 NM/30 Bugzilla 888: TLS documentation bugfixes
 
+NM/31 Bugzilla 889: Dovecot buffer overrun fix
+
 
 Exim version 4.69
 -----------------
diff --git a/src/src/auths/dovecot.c b/src/src/auths/dovecot.c
index ff0f8469c..9893dac22 100644
--- a/src/src/auths/dovecot.c
+++ b/src/src/auths/dovecot.c
@@ -1,4 +1,4 @@
-/* $Cambridge: exim/src/src/auths/dovecot.c,v 1.10 2008/05/16 12:22:08 nm4 Exp $ */
+/* $Cambridge: exim/src/src/auths/dovecot.c,v 1.11 2009/10/26 13:18:54 nm4 Exp $ */
 
 /*
  * Copyright (c) 2004 Andrey Panin <pazke@donpac.ru>
@@ -131,6 +131,7 @@ for (;;)
     {
     sbp = read(fd, sbuffer, sizeof(sbuffer));
     if (sbp == 0) { if (count == 0) return NULL; else break; }
+    p = 0;
     }
 
   while (p < sbp)