diff options
| author |   Johan Hovold <johan@kernel.org> | 2019-11-28 18:22:00 +0100 |
|---|---|---|
| committer |   Kalle Valo <kvalo@codeaurora.org> | 2019-12-18 20:57:03 +0200 |
| commit | e93cd35101b61e4c79149be2cfc927c4b28dc60c (patch) | |
| tree | e67f9473405ff7ca82a35c18b44e9b4405cb55bf /drivers/net/wireless | |
| parent | rt2x00: use RESET state bit to prevent IV changes on restart (diff) | |
| download | linux-dev-e93cd35101b61e4c79149be2cfc927c4b28dc60c.tar.xz linux-dev-e93cd35101b61e4c79149be2cfc927c4b28dc60c.zip | |
rsi: fix use-after-free on failed probe and unbind
Make sure to stop both URBs before returning after failed probe as well
as on disconnect to avoid use-after-free in the completion handler.
Reported-by: syzbot+b563b7f8dbe8223a51e8@syzkaller.appspotmail.com
Fixes: a4302bff28e2 ("rsi: add bluetooth rx endpoint")
Fixes: dad0d04fa7ba ("rsi: Add RS9113 wireless driver")
Cc: stable <stable@vger.kernel.org> # 3.15
Cc: Siva Rebbagondla <siva.rebbagondla@redpinesignals.com>
Cc: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Cc: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Cc: Fariya Fatima <fariyaf@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_usb.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c index 53f41fc2cadf..30bed719486e 100644 --- a/drivers/net/wireless/rsi/rsi_91x_usb.c +++ b/drivers/net/wireless/rsi/rsi_91x_usb.c @@ -292,6 +292,15 @@ out: dev_kfree_skb(rx_cb->rx_skb); } +static void rsi_rx_urb_kill(struct rsi_hw *adapter, u8 ep_num) +{ + struct rsi_91x_usbdev *dev = (struct rsi_91x_usbdev *)adapter->rsi_dev; + struct rx_usb_ctrl_block *rx_cb = &dev->rx_cb[ep_num - 1]; + struct urb *urb = rx_cb->rx_urb; + + usb_kill_urb(urb); +} + /** * rsi_rx_urb_submit() - This function submits the given URB to the USB stack. * @adapter: Pointer to the adapter structure. @@ -823,10 +832,13 @@ static int rsi_probe(struct usb_interface *pfunction, if (adapter->priv->coex_mode > 1) { status = rsi_rx_urb_submit(adapter, BT_EP); if (status) - goto err1; + goto err_kill_wlan_urb; } return 0; + +err_kill_wlan_urb: + rsi_rx_urb_kill(adapter, WLAN_EP); err1: rsi_deinit_usb_interface(adapter); err: @@ -857,6 +869,10 @@ static void rsi_disconnect(struct usb_interface *pfunction) adapter->priv->bt_adapter = NULL; } + if (adapter->priv->coex_mode > 1) + rsi_rx_urb_kill(adapter, BT_EP); + rsi_rx_urb_kill(adapter, WLAN_EP); + rsi_reset_card(adapter); rsi_deinit_usb_interface(adapter); rsi_91x_deinit(adapter); |