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| author |   Anant Thazhemadam <anant.thazhemadam@gmail.com> | 2020-09-30 00:28:15 +0530 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2020-11-09 13:09:43 +0100 |
| commit | 70f259a3f4276b71db365b1d6ff1eab805ea6ec3 (patch) | |
| tree | 6335200543924fd567f806efa9ffe352a87679f5 /drivers/bluetooth | |
| parent | Bluetooth: Fix null pointer dereference in hci_event_packet() (diff) | |
| download | linux-dev-70f259a3f4276b71db365b1d6ff1eab805ea6ec3.tar.xz linux-dev-70f259a3f4276b71db365b1d6ff1eab805ea6ec3.zip | |
Bluetooth: hci_h5: close serdev device and free hu in h5_close
When h5_close() gets called, the memory allocated for the hu gets
freed only if hu->serdev doesn't exist. This leads to a memory leak.
So when h5_close() is requested, close the serdev device instance and
free the memory allocated to the hu entirely instead.
Fixes: https://syzkaller.appspot.com/bug?extid=6ce141c55b2f7aafd1c4
Reported-by: syzbot+6ce141c55b2f7aafd1c4@syzkaller.appspotmail.com
Tested-by: syzbot+6ce141c55b2f7aafd1c4@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/hci_h5.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c index 981d96cc7695..a10d710fc3f1 100644 --- a/drivers/bluetooth/hci_h5.c +++ b/drivers/bluetooth/hci_h5.c @@ -248,8 +248,12 @@ static int h5_close(struct hci_uart *hu) if (h5->vnd && h5->vnd->close) h5->vnd->close(h5); - if (!hu->serdev) - kfree(h5); + if (hu->serdev) + serdev_device_close(hu->serdev); + + kfree_skb(h5->rx_skb); + kfree(h5); + h5 = NULL; return 0; } |