diff options
| author | Johan Hedberg <johan.hedberg@intel.com> | 2015-01-27 13:55:52 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-01-28 23:26:19 +0300 |
| commit | d25b78e2ed60ea33dc1008d0f50b3410b73212a0 (patch) | |
| tree | 48a49a400c587df4122eee8ffb244bc3b576d048 /net/bluetooth | |
| parent | cda0dd7809f89e8d7f88335690d84b8482d33111 (diff) | |
| download | linux-d25b78e2ed60ea33dc1008d0f50b3410b73212a0.tar.xz | |
Bluetooth: Enforce zero-valued hash/rand192 for LE OOB
Until legacy SMP OOB pairing is implemented user space should be given a
clear error when trying to use it. This patch adds a corresponding check
to the Add Remote OOB Data handler function which returns "invalid
parameters" if non-zero Rand192 or Hash192 parameters were given for an
LE address.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/mgmt.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 25e40e82b9a2..8417ab387d1a 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -131,6 +131,9 @@ static const u16 mgmt_events[] = { #define CACHE_TIMEOUT msecs_to_jiffies(2 * 1000) +#define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ + "\x00\x00\x00\x00\x00\x00\x00\x00" + struct pending_cmd { struct list_head list; u16 opcode; @@ -3673,6 +3676,18 @@ static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev, u8 status; if (bdaddr_type_is_le(cp->addr.type)) { + /* Enforce zero-valued 192-bit parameters as + * long as legacy SMP OOB isn't implemented. + */ + if (memcmp(cp->rand192, ZERO_KEY, 16) || + memcmp(cp->hash192, ZERO_KEY, 16)) { + err = cmd_complete(sk, hdev->id, + MGMT_OP_ADD_REMOTE_OOB_DATA, + MGMT_STATUS_INVALID_PARAMS, + addr, sizeof(*addr)); + goto unlock; + } + rand192 = NULL; hash192 = NULL; } else { |