From: Ken Raeburn <raeburn@mit.edu>
Date: Fri, 27 Jul 2007 04:38:46 +0000 (+0000)
Subject: Check for null file handle in get_next.
X-Git-Tag: krb5-1.7-alpha1~989
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=bfe0abf978c102e89fdd093d6334d239af754cce;p=krb5.git

Check for null file handle in get_next.
Patch from Luke Howard.

ticket: 5471

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@19736 dc483132-0cff-0310-8789-dd5450dbe970
---

diff --git a/src/lib/krb5/keytab/kt_file.c b/src/lib/krb5/keytab/kt_file.c
index 2652c00af..1d58a53ee 100644
--- a/src/lib/krb5/keytab/kt_file.c
+++ b/src/lib/krb5/keytab/kt_file.c
@@ -461,6 +461,10 @@ krb5_ktfile_get_next(krb5_context context, krb5_keytab id, krb5_keytab_entry *en
     kerror = KTLOCK(id);
     if (kerror)
 	return kerror;
+    if (KTFILEP(id) == NULL) {
+	KTUNLOCK(id);
+	return KRB5_KT_IOERR;
+    }
     if (fseek(KTFILEP(id), *fileoff, 0) == -1) {
 	KTUNLOCK(id);
 	return KRB5_KT_END;