From: Salva Peiró <speirofr@gmail.com>
Date: Wed, 14 Oct 2015 15:48:02 +0000 (+0200)
Subject: staging/dgnc: fix info leak in ioctl
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4b6184336ebb5c8dc1eae7f7ab46ee608a748b05;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

staging/dgnc: fix info leak in ioctl

The dgnc_mgmt_ioctl() code fails to initialize the 16 _reserved bytes of
struct digi_dinfo after the ->dinfo_nboards member. Add an explicit
memset(0) before filling the structure to avoid the info leak.

Signed-off-by: Salva Peiró <speirofr@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/dgnc/dgnc_mgmt.c b/drivers/staging/dgnc/dgnc_mgmt.c
index 9ec3efe0a287..518fbd5e2d0e 100644
--- a/drivers/staging/dgnc/dgnc_mgmt.c
+++ b/drivers/staging/dgnc/dgnc_mgmt.c
@@ -110,6 +110,7 @@ long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
 		spin_lock_irqsave(&dgnc_global_lock, flags);
 
+		memset(&ddi, 0, sizeof(ddi));
 		ddi.dinfo_nboards = dgnc_NumBoards;
 		sprintf(ddi.dinfo_version, "%s", DG_PART);