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authorJohan Hedberg <johan.hedberg@intel.com>2013-01-09 15:29:35 +0200
committerGustavo Padovan <gustavo.padovan@collabora.co.uk>2013-01-10 06:09:07 -0200
commit575b3a02e20a10bb8110378ef363a8a174018680 (patch)
tree677812b750e51e31090123be2320267d74582476 /net/bluetooth/mgmt.c
parent715a5bf2db4df4a7df64f420d21fb49ba146b3fa (diff)
Bluetooth: Fix checking for valid device class values
The two lowest bits of the minor device class value are reserved and should be zero, and the three highest bits of the major device class likewise. The management code should therefore test for this and return a proper "invalid params" error if the condition is not met. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Diffstat (limited to 'net/bluetooth/mgmt.c')
-rw-r--r--net/bluetooth/mgmt.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 1dd41d48eb6..f3fec4264dc 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1430,6 +1430,12 @@ static int set_dev_class(struct sock *sk, struct hci_dev *hdev, void *data,
goto unlock;
}
+ if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) {
+ err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
+ MGMT_STATUS_INVALID_PARAMS);
+ goto unlock;
+ }
+
hdev->major_class = cp->major;
hdev->minor_class = cp->minor;