CVS commit: src/sys/kern

[Maxime Villard]

Module Name:    src
Committed By:   maxv
Date:           Thu Nov 29 12:37:22 UTC 2018

Modified Files:
        src/sys/kern: kern_exit.c

Log Message:
Fix info leak. There is one branch where 'status' is not initialized at
all.

        + Possible info leak: [len=4, leaked=4]
        | #0 0xffffffff80baf397 in kleak_copyout
        | #1 0xffffffff80b56d0c in sys_wait6
        | #2 0xffffffff80259c42 in syscall


To generate a diff of this commit:
cvs rdiff -u -r1.272 -r1.273 src/sys/kern/kern_exit.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.


Modified files:

Index: src/sys/kern/kern_exit.c
diff -u src/sys/kern/kern_exit.c:1.272 src/sys/kern/kern_exit.c:1.273
--- src/sys/kern/kern_exit.c:1.272	Thu Jul 12 10:46:48 2018
+++ src/sys/kern/kern_exit.c	Thu Nov 29 12:37:22 2018
@@ -1,4 +1,4 @@
-/*	$NetBSD: kern_exit.c,v 1.272 2018/07/12 10:46:48 maxv Exp $	*/
+/*	$NetBSD: kern_exit.c,v 1.273 2018/11/29 12:37:22 maxv Exp $	*/
 
 /*-
  * Copyright (c) 1998, 1999, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.272 2018/07/12 10:46:48 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_exit.c,v 1.273 2018/11/29 12:37:22 maxv Exp $");
 
 #include "opt_ktrace.h"
 #include "opt_dtrace.h"
@@ -647,6 +647,7 @@ do_sys_waitid(idtype_t idtype, id_t id, 
 	if (child == NULL) {
 		mutex_exit(proc_lock);
 		*pid = 0;
+		*status = 0;
 		return error;
 	}
 	*pid = child->p_pid;