| commit | 8c76d7cd520ebffc1ea9ea0850d87a224a50c7f2 | [log] [tgz] |
|---|---|---|
| author | Johan Hovold <johan@kernel.org> | Mon Mar 06 17:36:41 2017 +0100 |
| committer | Johan Hovold <johan@kernel.org> | Wed Mar 08 16:14:42 2017 +0100 |
| tree | ab1bcdcb384c34819fadbdf38dde2dda4a6d2ca5 | |
| parent | 654b404f2a222f918af9b0cd18ad469d0c941a8e [diff] |
USB: serial: safe_serial: fix information leak in completion handler
Add missing sanity check to the bulk-in completion handler to avoid an
integer underflow that could be triggered by a malicious device.
This avoids leaking up to 56 bytes from after the URB transfer buffer to
user space.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>