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(parent: 0ec7459) | patch
USB: serial: keyspan_pda: fix receive sanity checks
authorJohan Hovold <johan@kernel.org>
Tue, 31 Jan 2017 16:17:29 +0000 (17:17 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Mon, 5 Jun 2017 20:13:46 +0000 (21:13 +0100)
commitb9d711c45a310cd150bddced2604a70115059c2b
treec60d5407adaa550213719ecdf8aeeb91ad76def0tree | snapshot
parent0ec745967dbf486a05082f67e67910afa3a9d319commit | diff
USB: serial: keyspan_pda: fix receive sanity checks

commit c528fcb116e61afc379a2e0a0f70906b937f1e2c upstream.

Make sure to check for short transfers before parsing the receive buffer
to avoid acting on stale data.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
[bwh: Backported to 3.2:
 - Adjust context
 - Keep the check for !tty in the data case]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/usb/serial/keyspan_pda.c diff | blob | history
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