3.19.8-ckt6 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Oleksij Rempel <[email protected]> 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 <[email protected]> Signed-off-by: Dirk Behme <[email protected]> Signed-off-by: Dmitry Torokhov <[email protected]> Signed-off-by: Kamal Mostafa <[email protected]> --- 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; -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
