svn commit: r343261 - head/sys/compat/linux

[Ed Maste]

Author: emaste
Date: Mon Jan 21 16:21:03 2019
New Revision: 343261
URL: https://svnweb.freebsd.org/changeset/base/343261

Log:
  linuxulator: fix stack memory disclosure in linux_ioctl_termio
  
  admbugs:	765
  Reported by:	Vlad Tsyrklevich <vlad at 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 16:19:02 2019	(r343260)
+++ head/sys/compat/linux/linux_ioctl.c	Mon Jan 21 16:21:03 2019	(r343261)
@@ -686,6 +686,7 @@ bsd_to_linux_termio(struct termios *bios, struct linux
 {
 	struct linux_termios lios;
 
+	memset(lio, 0, sizeof(*lio));
 	bsd_to_linux_termios(bios, &lios);
 	lio->c_iflag = lios.c_iflag;
 	lio->c_oflag = lios.c_oflag;