From: "Mickaël Salaün" <mic@digikod.net>
To: linux-kernel@vger.kernel.org
Cc: "Mickaël Salaün" <mic@digikod.net>,
"Jeff Dike" <jdike@addtoit.com>,
"Richard Weinberger" <richard@nod.at>,
"Tristan Schmelcher" <tschmelcher@google.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
user-mode-linux-devel@lists.sourceforge.net,
user-mode-linux-user@lists.sourceforge.net
Subject: [PATCH 1/2] um: Set secure access mode for temporary file
Date: Sat, 28 Nov 2015 22:32:29 +0100 [thread overview]
Message-ID: <1448746350-19998-2-git-send-email-mic@digikod.net> (raw)
In-Reply-To: <1448746350-19998-1-git-send-email-mic@digikod.net>
Replace the default insecure mode 0777 with 0700 for temporary file.
Prohibit other users to change the executable mapped code.
Signed-off-by: Mickaël Salaün <mic@digikod.net>
---
arch/um/os-Linux/mem.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 897e9ad..798aeb4 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -142,7 +142,7 @@ static int __init create_tmp_file(unsigned long long len)
if (fd < 0)
exit(1);
- err = fchmod(fd, 0777);
+ err = fchmod(fd, 0700);
if (err < 0) {
perror("fchmod");
exit(1);
--
2.6.2
--
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next prev parent reply other threads:[~2015-11-28 21:32 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-28 21:32 [PATCH 0/2] um: Protect memory mapped file Mickaël Salaün
2015-11-28 21:32 ` Mickaël Salaün [this message]
2015-11-28 21:40 ` [uml-devel] [PATCH 1/2] um: Set secure access mode for temporary file Richard Weinberger
2015-11-28 22:52 ` Mickaël Salaün
2015-11-28 22:55 ` Richard Weinberger
2015-11-28 23:00 ` Mickaël Salaün
2015-11-28 23:11 ` Richard Weinberger
2015-11-28 21:32 ` [PATCH 2/2] um: Use race-free temporary file creation Mickaël Salaün
2015-11-28 22:07 ` [uml-devel] " Richard Weinberger
2015-11-28 22:56 ` Mickaël Salaün
2015-11-28 22:59 ` Richard Weinberger
2015-11-28 23:02 ` Mickaël Salaün
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