From 4308a37410d0d3447e64465cbb3a48643d1bbf6c Mon Sep 17 00:00:00 2001 From: Ed Maste Date: Mon, 21 Jan 2019 16:19:02 +0000 Subject: [PATCH] linuxulator: fix stack memory disclosure in linux_ioctl_v4l admbugs: 765 Reported by: Vlad Tsyrklevich Reviewed by: andrew MFC after: 1 day Security: Kernel stack memory disclosure Sponsored by: The FreeBSD Foundation --- sys/compat/linux/linux_ioctl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/compat/linux/linux_ioctl.c b/sys/compat/linux/linux_ioctl.c index 0a8e5087984..93a3edad846 100644 --- a/sys/compat/linux/linux_ioctl.c +++ b/sys/compat/linux/linux_ioctl.c @@ -2843,6 +2843,8 @@ linux_to_bsd_v4l_window(struct l_video_window *lvw, struct video_window *vw) static int bsd_to_linux_v4l_window(struct video_window *vw, struct l_video_window *lvw) { + memset(lvw, 0, sizeof(*lvw)); + lvw->x = vw->x; lvw->y = vw->y; lvw->width = vw->width;