linux-kernel - [PATCH] bsr: avoid format string leaking into device name

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Message-ID: <20140610175108.GA30588@www.outflux.net>
Date:	Tue, 10 Jun 2014 10:51:08 -0700
From:	Kees Cook <keescook@...omium.org>
To:	linux-kernel@...r.kernel.org
Cc:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH] bsr: avoid format string leaking into device name

This makes sure a format string cannot accidentally leak into a device name.

Signed-off-by: Kees Cook <keescook@...omium.org>
---
 drivers/char/bsr.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/bsr.c b/drivers/char/bsr.c
index 8fedbc250414..a6cef548e01e 100644
--- a/drivers/char/bsr.c
+++ b/drivers/char/bsr.c
@@ -259,7 +259,7 @@ static int bsr_add_node(struct device_node *bn)
 		}
 
 		cur->bsr_device = device_create(bsr_class, NULL, cur->bsr_dev,
-						cur, cur->bsr_name);
+						cur, "%s", cur->bsr_name);
 		if (IS_ERR(cur->bsr_device)) {
 			printk(KERN_ERR "device_create failed for %s\n",
 			       cur->bsr_name);
-- 
1.7.9.5


-- 
Kees Cook
Chrome OS Security
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