From 23dfa2e35bec9c0f6c3d579e7dc2e1d0ce636aa2 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@samba.org>
Date: Fri, 19 Sep 2014 13:33:10 +0200
Subject: [PATCH] nsswitch: Skip groups we were not able to map.
If we have configured the idmap_ad backend it is possible that the user
is in a group without a gid set. This will result in (uid_t)-1 as the
gid. We return this invalid gid to NSS which is wrong.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10824
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>
Autobuild-User(master): David Disseldorp <ddiss@samba.org>
Autobuild-Date(master): Fri Sep 19 17:57:14 CEST 2014 on sn-devel-104
(cherry picked from commit 7f59711f076e98ece099f6b38ff6da8c80fa6d5e)
Signed-off-by: Andreas Schneider <asn@samba.org>
---
nsswitch/winbind_nss_linux.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/nsswitch/winbind_nss_linux.c b/nsswitch/winbind_nss_linux.c
index 8d66a74..70ede3e 100644
--- a/nsswitch/winbind_nss_linux.c
+++ b/nsswitch/winbind_nss_linux.c
@@ -1101,6 +1101,11 @@ _nss_winbind_initgroups_dyn(char *user, gid_t group, long int *start,
continue;
}
+ /* Skip groups without a mapping */
+ if (gid_list[i] == (uid_t)-1) {
+ continue;
+ }
+
/* Filled buffer ? If so, resize. */
if (*start == *size) {
--
2.1.0