From 155b9e7c74d1a623e018fc2f8ca2e32e4aa3f213 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?G=C3=BCnther=20Deschner?= <gd@samba.org>
Date: Fri, 16 Feb 2007 17:25:54 +0000
Subject: [PATCH] r21394: Prevent nscd crash due to potential NULL pointer
 dereference in _nss_winbind_initgroups_dyn() on an empty group list.

Guenther
---
 source/nsswitch/winbind_nss_linux.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/nsswitch/winbind_nss_linux.c b/source/nsswitch/winbind_nss_linux.c
index ea21391e980..fa74194aa9d 100644
--- a/source/nsswitch/winbind_nss_linux.c
+++ b/source/nsswitch/winbind_nss_linux.c
@@ -948,6 +948,10 @@ _nss_winbind_initgroups_dyn(char *user, gid_t group, long int *start,
 				"and %d gids\n", getpid(),
 				user, num_gids);
 #endif
+		if (gid_list == NULL) {
+			ret = NSS_STATUS_NOTFOUND;
+			goto done;
+		}
 
 		/* Copy group list to client */