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authorMarcel Holtmann <marcel@holtmann.org>2015-04-01 23:51:53 +0300
committerJohan Hedberg <johan.hedberg@intel.com>2015-04-02 08:43:11 +0300
commit5f5da99f1da5b01c7c45473a500c7dbb77a00958 (patch)
treed13a71ede7e5d4d2b84da3917d08fedfd7f7fb33 /net/bluetooth/hidp
parent8bf17a3619250944957c732e71659787528131c3 (diff)
downloadlinux-5f5da99f1da5b01c7c45473a500c7dbb77a00958.tar.xz
Bluetooth: Restrict HIDP flags to only valid ones
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@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net/bluetooth/hidp')
-rw-r--r--net/bluetooth/hidp/core.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 07348e142f16..926a0e8b7136 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;