diff options
| author | Johan Hovold | 2019-09-19 10:30:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2019-10-04 14:01:56 +0200 |
| commit | 1d427be4a39defadda6dd8f4659bc17f7591740f (patch) | |
| tree | 16a628748e29860605a95edde189f3b99b017f06 | |
| parent | f2372b87c386871b16d7dbda680d98d4092ab708 (diff) | |
USB: legousbtower: fix slab info leak at probe
Make sure to check for short transfers when retrieving the version
information at probe to avoid leaking uninitialised slab data when
logging it.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20190919083039.30898-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/misc/legousbtower.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 006cf13b2199..1db07d4dc738 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -891,8 +891,10 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device get_version_reply, sizeof(*get_version_reply), 1000); - if (result < 0) { - dev_err(idev, "LEGO USB Tower get version control request failed\n"); + if (result < sizeof(*get_version_reply)) { + if (result >= 0) + result = -EIO; + dev_err(idev, "get version request failed: %d\n", result); retval = result; goto error; } |