[patch] gru: info leak in gru_get_config_info()

Dan Carpenter
2013-04-21T11:10:31Z

The "info.fill" array isn't initialized so it can leak uninitialized
stack information to user space.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index 44d273c..ed5fc43 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -176,6 +176,7 @@ static long gru_get_config_info(unsigned long arg)
info.nodes = num_online_nodes();
info.blades = info.nodes / nodesperblade;
info.chiplets = GRU_CHIPLETS_PER_BLADE * info.blades;
+ memset(&info.fill, 0, sizeof(info.fill));

if (copy_to_user((void __user *)arg, &info, sizeof(info)))
return -EFAULT;