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USB: serial: mos7840: fix status-register error handling
authorJohan Hovold <johan@kernel.org>
Wed, 4 Jul 2018 15:02:17 +0000 (17:02 +0200)
committerJohan Hovold <johan@kernel.org>
Fri, 6 Jul 2018 08:32:28 +0000 (10:32 +0200)
commit794744abfffef8b1f3c0c8a4896177d6d13d653d
tree8bb8493d4aeccbac29c17191f6ef9998d68036d0
parent01b3cdfca263a17554f7b249d20a247b2a751521
USB: serial: mos7840: fix status-register error handling

Add missing transfer-length sanity check to the status-register
completion handler to avoid leaking bits of uninitialised slab data to
user space.

Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver")
Cc: stable <stable@vger.kernel.org> # 2.6.19
Signed-off-by: Johan Hovold <johan@kernel.org>
drivers/usb/serial/mos7840.c