diff options
| author | Takashi Iwai <tiwai@suse.de> | 2017-10-11 14:39:02 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-18 07:35:40 (GMT) |
| commit | bbab59d6c4b2840172af0935a7a6ce2744c42193 (patch) | |
| tree | d2dd3b4b5d70a1522b6b2949f9975c1d97f7042f /sound | |
| parent | 6571ce8408811e56f2c70d093a6546c11b82fad3 (diff) | |
| download | linux-bbab59d6c4b2840172af0935a7a6ce2744c42193.tar.xz | |
ALSA: caiaq: Fix stray URB at probe error path
commit 99fee508245825765ff60155fed43f970ff83a8f upstream.
caiaq driver doesn't kill the URB properly at its error path during
the probe, which may lead to a use-after-free error later. This patch
addresses it.
Reported-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/caiaq/device.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/sound/usb/caiaq/device.c b/sound/usb/caiaq/device.c index b871ba4..4458190 100644 --- a/sound/usb/caiaq/device.c +++ b/sound/usb/caiaq/device.c @@ -469,10 +469,12 @@ static int init_card(struct snd_usb_caiaqdev *cdev) err = snd_usb_caiaq_send_command(cdev, EP1_CMD_GET_DEVICE_INFO, NULL, 0); if (err) - return err; + goto err_kill_urb; - if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ)) - return -ENODEV; + if (!wait_event_timeout(cdev->ep1_wait_queue, cdev->spec_received, HZ)) { + err = -ENODEV; + goto err_kill_urb; + } usb_string(usb_dev, usb_dev->descriptor.iManufacturer, cdev->vendor_name, CAIAQ_USB_STR_LEN); @@ -507,6 +509,10 @@ static int init_card(struct snd_usb_caiaqdev *cdev) setup_card(cdev); return 0; + + err_kill_urb: + usb_kill_urb(&cdev->ep1_in_urb); + return err; } static int snd_probe(struct usb_interface *intf, |