From 4b6184336ebb5c8dc1eae7f7ab46ee608a748b05 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Salva=20Peir=C3=B3?= Date: Wed, 14 Oct 2015 17:48:02 +0200 Subject: [PATCH] staging/dgnc: fix info leak in ioctl MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dgnc/dgnc_mgmt.c | 1 + 1 file changed, 1 insertion(+) 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); -- 2.20.1