From: Salva Peiró <[email protected]> 3.12-stable review patch. If anyone has any objections, please let me know.
=============== commit 4b6184336ebb5c8dc1eae7f7ab46ee608a748b05 upstream. 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 <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> Cc: Yuki Machida <[email protected]> Signed-off-by: Jiri Slaby <[email protected]> --- 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 c4629d7c80b2..d885bbb7de60 100644 --- a/drivers/staging/dgnc/dgnc_mgmt.c +++ b/drivers/staging/dgnc/dgnc_mgmt.c @@ -145,6 +145,7 @@ long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) DGNC_LOCK(dgnc_global_lock, lock_flags); + memset(&ddi, 0, sizeof(ddi)); ddi.dinfo_nboards = dgnc_NumBoards; sprintf(ddi.dinfo_version, "%s", DG_PART); -- 2.7.0
