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cx24117: fix a buffer overflow when checking userspace params
authorMauro Carvalho Chehab <mchehab@osg.samsung.com>
Tue, 28 Apr 2015 22:03:59 +0000 (19:03 -0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 3 Aug 2015 16:29:02 +0000 (09:29 -0700)
commitce99975dce28f20447fb72ddc8f8bf482d4f2559
tree0ed836dfeebc9b4ae4fb9de5a54b3a7f5e28d39ctree | snapshot
parenta7faceb949f9511c17172200738a621b7f0ef0ffcommit | diff
cx24117: fix a buffer overflow when checking userspace params

commit 82e3b88b679049f043fe9b03991d6d66fc0a43c8 upstream.

The maximum size for a DiSEqC command is 6, according to the
userspace API. However, the code allows to write up much more values:
drivers/media/dvb-frontends/cx24116.c:983 cx24116_send_diseqc_msg() error: buffer overflow 'd->msg' 6 <= 23

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/media/dvb-frontends/cx24117.c diff | blob | history
Domain: System / Kernel;