s3:smbd: Make sure struct security_ace is initialized

"Error: UNINIT (CWE-457):
samba-4.20.0rc2/source3/smbd/posix_acls.c:4778: var_decl: Declaring variable ""aces"" without initializer.
samba-4.20.0rc2/source3/smbd/posix_acls.c:4799: uninit_use_in_call: Using uninitialized value ""*aces"". Field ""aces->object"" is uninitialized when calling ""make_sec_acl"".
 4797|   	idx++;
 4798|
 4799|-> 	new_dacl = make_sec_acl(ctx,
 4800|   				NT4_ACL_REVISION,
 4801|   				idx,"

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Martin Schwenke <mschwenke@ddn.com>

diff --git a/source3/smbd/posix_acls.c b/source3/smbd/posix_acls.c
index 2ff2d5f77b82470382b4bd352fc8849958a66f82..e743945e4734845b51f7e682291d7c1d2eb7aa59 100644 (file)
--- a/source3/smbd/posix_acls.c
+++ b/source3/smbd/posix_acls.c
@@ -4775,7 +4775,7 @@ static NTSTATUS make_default_acl_everyone(TALLOC_CTX *ctx,
 {
        struct dom_sid owner_sid, group_sid;
        size_t size = 0;
-       struct security_ace aces[1];
+       struct security_ace aces[1] = {0};
        mode_t mode = psbuf->st_ex_mode;
        struct security_acl *new_dacl = NULL;
        int idx = 0;