Module Name: src
Committed By: kamil
Date: Sat Feb 11 19:32:41 UTC 2017
Modified Files:
src/sys/kern: sys_ptrace_common.c
Log Message:
Be paranoid about PT_SET_SIGINFO and PT_GET_SIGINFO in ptrace(2)
Currently a tracer is prohibited to read and write memory of a tracee.
Prohibit reading and faking signal information.
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.12 -r1.13 src/sys/kern/sys_ptrace_common.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/sys_ptrace_common.c
diff -u src/sys/kern/sys_ptrace_common.c:1.12 src/sys/kern/sys_ptrace_common.c:1.13
--- src/sys/kern/sys_ptrace_common.c:1.12 Thu Jan 26 03:54:01 2017
+++ src/sys/kern/sys_ptrace_common.c Sat Feb 11 19:32:41 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: sys_ptrace_common.c,v 1.12 2017/01/26 03:54:01 christos Exp $ */
+/* $NetBSD: sys_ptrace_common.c,v 1.13 2017/02/11 19:32:41 kamil Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@@ -118,7 +118,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.12 2017/01/26 03:54:01 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: sys_ptrace_common.c,v 1.13 2017/02/11 19:32:41 kamil Exp $");
#ifdef _KERNEL_OPT
#include "opt_ptrace.h"
@@ -404,6 +404,8 @@ do_ptrace(struct ptrace_methods *ptm, st
case PT_WRITE_I:
case PT_WRITE_D:
case PT_IO:
+ case PT_SET_SIGINFO:
+ case PT_GET_SIGINFO:
#ifdef PT_GETREGS
case PT_GETREGS:
#endif
@@ -451,8 +453,6 @@ do_ptrace(struct ptrace_methods *ptm, st
case PT_SET_EVENT_MASK:
case PT_GET_EVENT_MASK:
case PT_GET_PROCESS_STATE:
- case PT_SET_SIGINFO:
- case PT_GET_SIGINFO:
/*
* You can't do what you want to the process if:
* (1) It's not being traced at all,
