From 96369155d446f5f1bab5401fd9fed709dcb87e0e Mon Sep 17 00:00:00 2001
From: David Disseldorp <ddiss@suse.de>
Date: Wed, 2 Nov 2011 18:39:03 +0100
Subject: [PATCH] pam_winbind: fix segfault in pam_sm_authenticate()
Ensure the potentially null winbind context is not dereferenced on
cleanup.
https://bugzilla.samba.org/show_bug.cgi?id=8564
---
nsswitch/pam_winbind.c | 7 ++++---
1 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/nsswitch/pam_winbind.c b/nsswitch/pam_winbind.c
index 0497726..cb119a6 100644
--- a/nsswitch/pam_winbind.c
+++ b/nsswitch/pam_winbind.c
@@ -2733,9 +2733,10 @@ out:
_pam_free_data_info3(pamh);
}
- _PAM_LOG_FUNCTION_LEAVE("pam_sm_authenticate", ctx, retval);
-
- TALLOC_FREE(ctx);
+ if (ctx != NULL) {
+ _PAM_LOG_FUNCTION_LEAVE("pam_sm_authenticate", ctx, retval);
+ TALLOC_FREE(ctx);
+ }
return retval;
}
--
1.7.3.4