On Thu, 2015-08-27 at 15:24 -0700, Dmitry Torokhov wrote:
> On August 27, 2015 3:10:07 PM PDT, Kamal Mostafa <kamal@xxxxxxxxxxxxx> wrote:
> >3.19.8-ckt6 -stable review patch. If anyone has any objections, please
> >let me know.
>
> Bad patch, reverted in mainline, please drop.
OK, dropped from 3.19-stable. Thanks Dmitry!
-Kamal
> >
> >------------------
> >
> >From: Oleksij Rempel <external.Oleksij.Rempel@xxxxxxxxxxxx>
> >
> >commit 7d01cd261c76f95913c81554a751968a1d282d3a upstream.
> >
> >If we get a corrupted packet with PAYLOAD_LENGTH > FRAME_MAXSIZE, we
> >will silently overwrite the stack.
> >
> >Signed-off-by: Oleksij Rempel <external.Oleksij.Rempel@xxxxxxxxxxxx>
> >Signed-off-by: Dirk Behme <dirk.behme@xxxxxxxxxxxx>
> >Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> >Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
> >---
> > drivers/input/touchscreen/zforce_ts.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> >diff --git a/drivers/input/touchscreen/zforce_ts.c
> >b/drivers/input/touchscreen/zforce_ts.c
> >index 19880c7..a9e1ee3 100644
> >--- a/drivers/input/touchscreen/zforce_ts.c
> >+++ b/drivers/input/touchscreen/zforce_ts.c
> >@@ -430,7 +430,7 @@ static int zforce_read_packet(struct zforce_ts *ts,
> >u8 *buf)
> > goto unlock;
> > }
> >
> >- if (buf[PAYLOAD_LENGTH] == 0) {
> >+ if (buf[PAYLOAD_LENGTH] == 0 || buf[PAYLOAD_LENGTH] > FRAME_MAXSIZE)
> >{
> > dev_err(&client->dev, "invalid payload length: %d\n",
> > buf[PAYLOAD_LENGTH]);
> > ret = -EIO;
>
>
> Thanks.
>
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