From ef7562b7f28319e6dd1f85dc1af87df2a7a84832 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 27 Oct 2009 15:35:35 +0000 Subject: [PATCH] dpt_i2o: Fix up copy*user Signed-off-by: Alan Cox Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- drivers/scsi/dpt_i2o.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c index b6af63ca980b..7d1aac31ec8d 100644 --- a/drivers/scsi/dpt_i2o.c +++ b/drivers/scsi/dpt_i2o.c @@ -1918,6 +1918,10 @@ static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg) } size = size>>16; size *= 4; + if (size > MAX_MESSAGE_SIZE) { + rcode = EINVAL; + goto cleanup; + } /* Copy in the user's I2O command */ if (copy_from_user (msg, user_msg, size)) { rcode = -EFAULT; -- 2.20.1