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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>
hifive-unleashed-5.1
Salva Peiró 2015-10-14 17:48:02 +02:00 committed by Greg Kroah-Hartman
parent 561e296734
commit 4b6184336e
1 changed files with 1 additions and 0 deletions
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drivers/staging/dgnc/dgnc_mgmt.c
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@ -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);