diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2015-04-01 23:51:52 +0300 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2015-04-02 08:42:21 +0300 |
| commit | 8bf17a3619250944957c732e71659787528131c3 (patch) | |
| tree | 947aa3ed5b5975067446f1cc5f9b3f30de79e889 /net/bluetooth | |
| parent | 41533fe5b4f92adb3c40f263b889dc6addff550e (diff) | |
| download | linux-8bf17a3619250944957c732e71659787528131c3.tar.xz | |
Bluetooth: Restrict CMTP flags to only valid ones
The CMTP 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')
| -rw-r--r-- | net/bluetooth/cmtp/core.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c index 278a194e6af4..ddbc348c9dff 100644 --- a/net/bluetooth/cmtp/core.c +++ b/net/bluetooth/cmtp/core.c @@ -75,10 +75,11 @@ static void __cmtp_unlink_session(struct cmtp_session *session) static void __cmtp_copy_session(struct cmtp_session *session, struct cmtp_conninfo *ci) { + u32 valid_flags = BIT(CMTP_LOOPBACK); memset(ci, 0, sizeof(*ci)); bacpy(&ci->bdaddr, &session->bdaddr); - ci->flags = session->flags; + ci->flags = session->flags & valid_flags; ci->state = session->state; ci->num = session->num; @@ -329,6 +330,7 @@ static int cmtp_session(void *arg) int cmtp_add_connection(struct cmtp_connadd_req *req, struct socket *sock) { + u32 valid_flags = BIT(CMTP_LOOPBACK); struct cmtp_session *session, *s; int i, err; @@ -337,6 +339,9 @@ int cmtp_add_connection(struct cmtp_connadd_req *req, struct socket *sock) if (!l2cap_is_socket(sock)) return -EBADFD; + if (req->flags & ~valid_flags) + return -EINVAL; + session = kzalloc(sizeof(struct cmtp_session), GFP_KERNEL); if (!session) return -ENOMEM; @@ -409,11 +414,15 @@ failed: int cmtp_del_connection(struct cmtp_conndel_req *req) { + u32 valid_flags = 0; struct cmtp_session *session; int err = 0; BT_DBG(""); + if (req->flags & ~valid_flags) + return -EINVAL; + down_read(&cmtp_session_sem); session = __cmtp_get_session(&req->bdaddr); |