s3: Fix uninitialized memory read in talloc_free()

Thanks to laurent gaffie <laurent.gaffie@gmail.com> for reporting
this issue!

diff --git a/source3/libsmb/clispnego.c b/source3/libsmb/clispnego.c
index 36d21d0a9659de5cd56531f5c3496cc97ce50783..33225290f9ebab325f41f4aa2aaa6f2247cd2a5c 100644 (file)
--- a/source3/libsmb/clispnego.c
+++ b/source3/libsmb/clispnego.c
@@ -161,6 +161,9 @@ bool spnego_parse_negTokenInit(DATA_BLOB blob,
        for (i=0; asn1_tag_remaining(data) > 0 && i < ASN1_MAX_OIDS-1; i++) {
                const char *oid_str = NULL;
                asn1_read_OID(data,talloc_autofree_context(),&oid_str);
+               if (data->has_error) {
+                       break;
+               }
                OIDs[i] = CONST_DISCARD(char *, oid_str);
        }
        OIDs[i] = NULL;