From: Luiz Augusto von Dentz luiz.von.dentz@intel.com
commit b86b0b150fed840c376145383ef5105116c81b0c upstream.
L2CAP_OPTIONS shall only be used with BR/EDR modes.
Signed-off-by: Luiz Augusto von Dentz luiz.von.dentz@intel.com Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Zubin Mithra zsm@chromium.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/bluetooth/l2cap_sock.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-)
--- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -426,6 +426,20 @@ static int l2cap_sock_getsockopt_old(str break; }
+ /* Only BR/EDR modes are supported here */ + switch (chan->mode) { + case L2CAP_MODE_BASIC: + case L2CAP_MODE_ERTM: + case L2CAP_MODE_STREAMING: + break; + default: + err = -EINVAL; + break; + } + + if (err < 0) + break; + memset(&opts, 0, sizeof(opts)); opts.imtu = chan->imtu; opts.omtu = chan->omtu; @@ -685,10 +699,8 @@ static int l2cap_sock_setsockopt_old(str break; }
- chan->mode = opts.mode; - switch (chan->mode) { - case L2CAP_MODE_LE_FLOWCTL: - break; + /* Only BR/EDR modes are supported here */ + switch (opts.mode) { case L2CAP_MODE_BASIC: clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); break; @@ -702,6 +714,10 @@ static int l2cap_sock_setsockopt_old(str break; }
+ if (err < 0) + break; + + chan->mode = opts.mode; chan->imtu = opts.imtu; chan->omtu = opts.omtu; chan->fcs = opts.fcs;