From b824d64b153a9683aed6730e9f093a7102c36799 Mon Sep 17 00:00:00 2001 From: Salva Peiró Date: Wed, 7 Oct 2015 07:09:26 -0300 Subject: media/vivid-osd: fix info leak in ioctl MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit eda98796aff0d9bf41094b06811f5def3b4c333c upstream. The vivid_fb_ioctl() code fails to initialize the 16 _reserved bytes of struct fb_vblank after the ->hcount member. Add an explicit memset(0) before filling the structure to avoid the info leak. Signed-off-by: Salva Peiró Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman --- drivers/media/platform/vivid/vivid-osd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/vivid/vivid-osd.c b/drivers/media/platform/vivid/vivid-osd.c index 084d346fb4c4..e15eef6a94e5 100644 --- a/drivers/media/platform/vivid/vivid-osd.c +++ b/drivers/media/platform/vivid/vivid-osd.c @@ -85,6 +85,7 @@ static int vivid_fb_ioctl(struct fb_info *info, unsigned cmd, unsigned long arg) case FBIOGET_VBLANK: { struct fb_vblank vblank; + memset(&vblank, 0, sizeof(vblank)); vblank.flags = FB_VBLANK_HAVE_COUNT | FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC; vblank.count = 0; -- cgit v1.2.3