dpt_i2o: Fix up copy*user
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/scsi/dpt_i2o.c b/drivers/scsi/dpt_i2o.c
index b6af63c..7d1aac3 100644
--- a/drivers/scsi/dpt_i2o.c
+++ b/drivers/scsi/dpt_i2o.c
@@ -1918,6 +1918,10 @@
}
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;