[src/trunk]: src/sys/compat Fix info leaks.

[maxv <maxv%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c9828372e7c4
branches:  trunk
changeset: 453701:c9828372e7c4
user:      maxv <maxv%NetBSD.org@localhost>
date:      Fri Aug 23 07:53:36 2019 +0000

description:
Fix info leaks.

diffstat:

 sys/compat/linux/common/linux_file64.c     |  5 +++--
 sys/compat/linux/common/linux_misc.c       |  5 +++--
 sys/compat/linux32/common/linux32_dirent.c |  5 +++--
 3 files changed, 9 insertions(+), 6 deletions(-)

diffs (78 lines):

diff -r 727168e79a2b -r c9828372e7c4 sys/compat/linux/common/linux_file64.c
--- a/sys/compat/linux/common/linux_file64.c    Fri Aug 23 07:29:29 2019 +0000
+++ b/sys/compat/linux/common/linux_file64.c    Fri Aug 23 07:53:36 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_file64.c,v 1.61 2019/08/23 06:54:54 maxv Exp $   */
+/*     $NetBSD: linux_file64.c,v 1.62 2019/08/23 07:53:36 maxv Exp $   */
 
 /*-
  * Copyright (c) 1995, 1998, 2000, 2008 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_file64.c,v 1.61 2019/08/23 06:54:54 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_file64.c,v 1.62 2019/08/23 07:53:36 maxv Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -353,6 +353,7 @@
                 * we have to worry about touching user memory outside of
                 * the copyout() call).
                 */
+               memset(&idb, 0, sizeof(idb));
                idb.d_ino = bdp->d_fileno;
                idb.d_type = bdp->d_type;
                idb.d_off = off;
diff -r 727168e79a2b -r c9828372e7c4 sys/compat/linux/common/linux_misc.c
--- a/sys/compat/linux/common/linux_misc.c      Fri Aug 23 07:29:29 2019 +0000
+++ b/sys/compat/linux/common/linux_misc.c      Fri Aug 23 07:53:36 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux_misc.c,v 1.241 2019/08/23 06:47:58 maxv Exp $    */
+/*     $NetBSD: linux_misc.c,v 1.242 2019/08/23 07:53:36 maxv Exp $    */
 
 /*-
  * Copyright (c) 1995, 1998, 1999, 2008 The NetBSD Foundation, Inc.
@@ -57,7 +57,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: linux_misc.c,v 1.241 2019/08/23 06:47:58 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux_misc.c,v 1.242 2019/08/23 07:53:36 maxv Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -772,6 +772,7 @@
                 * we have to worry about touching user memory outside of
                 * the copyout() call).
                 */
+               memset(&idb, 0, sizeof(idb));
                idb.d_ino = bdp->d_fileno;
                /*
                 * The old readdir() call misuses the offset and reclen fields.
diff -r 727168e79a2b -r c9828372e7c4 sys/compat/linux32/common/linux32_dirent.c
--- a/sys/compat/linux32/common/linux32_dirent.c        Fri Aug 23 07:29:29 2019 +0000
+++ b/sys/compat/linux32/common/linux32_dirent.c        Fri Aug 23 07:53:36 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: linux32_dirent.c,v 1.19 2018/09/03 16:29:29 riastradh Exp $ */
+/*     $NetBSD: linux32_dirent.c,v 1.20 2019/08/23 07:53:36 maxv Exp $ */
 
 /*-
  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
@@ -33,7 +33,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(0, "$NetBSD: linux32_dirent.c,v 1.19 2018/09/03 16:29:29 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: linux32_dirent.c,v 1.20 2019/08/23 07:53:36 maxv Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -201,6 +201,7 @@
                 * we have to worry about touching user memory outside of
                 * the copyout() call).
                 */
+               memset(&idb, 0, sizeof(idb));
                idb.d_ino = bdp->d_fileno;
                /*
                 * The old readdir() call misuses the offset and reclen fields.