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-rw-r--r--source4/lib/ldb/common/ldb_dn.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/source4/lib/ldb/common/ldb_dn.c b/source4/lib/ldb/common/ldb_dn.c
index 79953c6018..252a0c632b 100644
--- a/source4/lib/ldb/common/ldb_dn.c
+++ b/source4/lib/ldb/common/ldb_dn.c
@@ -103,7 +103,13 @@ struct ldb_dn *ldb_dn_from_ldb_val(void *mem_ctx,
dn = talloc_zero(mem_ctx, struct ldb_dn);
LDB_DN_NULL_FAILED(dn);
- dn->ldb = ldb;
+ dn->ldb = talloc_get_type(ldb, struct ldb_context);
+ if (dn->ldb == NULL) {
+ /* the caller probably got the arguments to
+ ldb_dn_new() mixed up */
+ talloc_free(dn);
+ return NULL;
+ }
if (strdn->data && strdn->length) {
const char *data = (const char *)strdn->data;