diff options
author | Frédéric Danis <frederic.danis@collabora.com> | 2023-12-08 18:41:50 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-01 12:42:40 +0000 |
commit | 0974347ac10dd17b9278482d83c69605a178bb54 (patch) | |
tree | 6dea6e56b268632920748882c608ad951e81ed69 /net/bluetooth | |
parent | 1d576c3a5af850bf11fbd103f9ba11aa6d6061fb (diff) | |
download | linux-stable-0974347ac10dd17b9278482d83c69605a178bb54.tar.gz linux-stable-0974347ac10dd17b9278482d83c69605a178bb54.tar.bz2 linux-stable-0974347ac10dd17b9278482d83c69605a178bb54.zip |
Bluetooth: L2CAP: Send reject on command corrupted request
commit 78b99eb1faa7371bf9c534690f26a71b6996622d upstream.
L2CAP/COS/CED/BI-02-C PTS test send a malformed L2CAP signaling packet
with 2 commands in it (a connection request and an unknown command) and
expect to get a connection response packet and a command reject packet.
The second is currently not sent.
Cc: stable@vger.kernel.org
Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/bluetooth')
-rw-r--r-- | net/bluetooth/l2cap_core.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index 17ca13e8c044..baeebee41cd9 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -6492,6 +6492,14 @@ drop: kfree_skb(skb); } +static inline void l2cap_sig_send_rej(struct l2cap_conn *conn, u16 ident) +{ + struct l2cap_cmd_rej_unk rej; + + rej.reason = cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD); + l2cap_send_cmd(conn, ident, L2CAP_COMMAND_REJ, sizeof(rej), &rej); +} + static inline void l2cap_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb) { @@ -6517,23 +6525,24 @@ static inline void l2cap_sig_channel(struct l2cap_conn *conn, if (len > skb->len || !cmd->ident) { BT_DBG("corrupted command"); + l2cap_sig_send_rej(conn, cmd->ident); break; } err = l2cap_bredr_sig_cmd(conn, cmd, len, skb->data); if (err) { - struct l2cap_cmd_rej_unk rej; - BT_ERR("Wrong link type (%d)", err); - - rej.reason = cpu_to_le16(L2CAP_REJ_NOT_UNDERSTOOD); - l2cap_send_cmd(conn, cmd->ident, L2CAP_COMMAND_REJ, - sizeof(rej), &rej); + l2cap_sig_send_rej(conn, cmd->ident); } skb_pull(skb, len); } + if (skb->len > 0) { + BT_DBG("corrupted command"); + l2cap_sig_send_rej(conn, 0); + } + drop: kfree_skb(skb); } |