Module Name: src
Committed By: christos
Date: Thu Jun 23 17:06:38 UTC 2011
Modified Files:
src/sys/miscfs/procfs: procfs_vnops.c
Log Message:
>From Aleksey Cheusov: Don't make it easy for compromised systems to bypass
ASLR protections by providing the mapping addresses of programs to everyone.
To generate a diff of this commit:
cvs rdiff -u -r1.180 -r1.181 src/sys/miscfs/procfs/procfs_vnops.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/miscfs/procfs/procfs_vnops.c
diff -u src/sys/miscfs/procfs/procfs_vnops.c:1.180 src/sys/miscfs/procfs/procfs_vnops.c:1.181
--- src/sys/miscfs/procfs/procfs_vnops.c:1.180 Wed Jun 30 22:38:31 2010
+++ src/sys/miscfs/procfs/procfs_vnops.c Thu Jun 23 13:06:38 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: procfs_vnops.c,v 1.180 2010/07/01 02:38:31 rmind Exp $ */
+/* $NetBSD: procfs_vnops.c,v 1.181 2011/06/23 17:06:38 christos Exp $ */
/*-
* Copyright (c) 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -105,7 +105,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.180 2010/07/01 02:38:31 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: procfs_vnops.c,v 1.181 2011/06/23 17:06:38 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -723,6 +723,8 @@
case PFScmdline:
case PFSemul:
case PFSstatm:
+ if (pfs->pfs_type == PFSmap || pfs->pfs_type == PFSmaps)
+ vap->va_mode = S_IRUSR;
vap->va_nlink = 1;
vap->va_uid = kauth_cred_geteuid(procp->p_cred);
vap->va_gid = kauth_cred_getegid(procp->p_cred);
