linux-kernel - [PATCH 4/8] power: ensure event is not used as format string

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Date:	Thu,  6 Jun 2013 13:52:21 -0700
From:	Kees Cook <keescook@...omium.org>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jens Axboe <axboe@...nel.dk>,
	"David S. Miller" <davem@...emloft.net>,
	Herbert Xu <herbert@...dor.hengli.com.au>,
	David Woodhouse <dwmw2@...radead.org>,
	Anton Vorontsov <cbou@...l.ru>,
	Karsten Keil <isdn@...ux-pingi.de>,
	Kees Cook <keescook@...omium.org>, stable@...r.kernel.org
Subject: [PATCH 4/8] power: ensure event is not used as format string

The exposed interface for cm_notify_event() could result in the event
msg string being parsed as a format string. Make sure it is only used
as a literal string.

Signed-off-by: Kees Cook <keescook@...omium.org>
Cc: stable@...r.kernel.org
Cc: Anton Vorontsov <cbou@...l.ru>
Cc: David Woodhouse <dwmw2@...radead.org>
---
 drivers/power/charger-manager.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c
index fefc39f..98de1dd 100644
--- a/drivers/power/charger-manager.c
+++ b/drivers/power/charger-manager.c
@@ -450,7 +450,7 @@ static void uevent_notify(struct charger_manager *cm, const char *event)
 	strncpy(env_str, event, UEVENT_BUF_SIZE);
 	kobject_uevent(&cm->dev->kobj, KOBJ_CHANGE);
 
-	dev_info(cm->dev, event);
+	dev_info(cm->dev, "%s", event);
 }
 
 /**
-- 
1.7.9.5

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