The HIDP flags should be clearly restricted to valid ones. So this puts
extra checks in place to ensure this.
Signed-off-by: Marcel Holtmann <marcel@xxxxxxxxxxxx>
---
net/bluetooth/hidp/core.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 07348e142f16..27a2d948d561 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -70,10 +70,11 @@ static void hidp_session_terminate(struct hidp_session *s);
static void hidp_copy_session(struct hidp_session *session, struct hidp_conninfo *ci)
{
+ __u32 valid_flags = 0;
memset(ci, 0, sizeof(*ci));
bacpy(&ci->bdaddr, &session->bdaddr);
- ci->flags = session->flags;
+ ci->flags = session->flags & valid_flags;
ci->state = BT_CONNECTED;
if (session->input) {
@@ -1312,6 +1313,7 @@ int hidp_connection_add(struct hidp_connadd_req *req,
struct socket *ctrl_sock,
struct socket *intr_sock)
{
+ __u32 valid_flags = 0;
struct hidp_session *session;
struct l2cap_conn *conn;
struct l2cap_chan *chan;
@@ -1321,6 +1323,9 @@ int hidp_connection_add(struct hidp_connadd_req *req,
if (ret)
return ret;
+ if (req->flags & ~valid_flags)
+ return -EINVAL;
+
chan = l2cap_pi(ctrl_sock->sk)->chan;
conn = NULL;
l2cap_chan_lock(chan);
@@ -1351,8 +1356,12 @@ out_conn:
int hidp_connection_del(struct hidp_conndel_req *req)
{
+ __u32 valid_flags = BIT(HIDP_VIRTUAL_CABLE_UNPLUG);
struct hidp_session *session;
+ if (req->flags & ~valid_flags)
+ return -EINVAL;
+
session = hidp_session_find(&req->bdaddr);
if (!session)
return -ENOENT;
--
2.1.0
--
To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
