Date: Mon, 21 Jan 2019 16:19:02 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r343260 - head/sys/compat/linux Message-ID: <201901211619.x0LGJ2OW041817@repo.freebsd.org>
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Author: emaste Date: Mon Jan 21 16:19:02 2019 New Revision: 343260 URL: https://svnweb.freebsd.org/changeset/base/343260 Log: linuxulator: fix stack memory disclosure in linux_ioctl_v4l admbugs: 765 Reported by: Vlad Tsyrklevich <vlad@tsyrklevich.net> Reviewed by: andrew MFC after: 1 day Security: Kernel stack memory disclosure Sponsored by: The FreeBSD Foundation Modified: head/sys/compat/linux/linux_ioctl.c Modified: head/sys/compat/linux/linux_ioctl.c ============================================================================== --- head/sys/compat/linux/linux_ioctl.c Mon Jan 21 15:27:58 2019 (r343259) +++ head/sys/compat/linux/linux_ioctl.c Mon Jan 21 16:19:02 2019 (r343260) @@ -2843,6 +2843,8 @@ linux_to_bsd_v4l_window(struct l_video_window *lvw, st 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;
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