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From: Kees Cook <keescook@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Larry Finger <Larry.Finger@lwfinger.net>,
	Chaoming Li <chaoming_li@realsil.com.cn>,
	"John W. Linville" <linville@tuxdriver.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	linux-wireless@vger.kernel.org, netdev@vger.kernel.org
Subject: [RESEND][PATCH] rtlwifi: btcoexist: avoid format string in printk
Date: Mon, 30 Jun 2014 13:38:49 -0700	[thread overview]
Message-ID: <20140630203849.GA4787@www.outflux.net> (raw)

Since CL_PRINTF only ever takes a single argument, make sure a format
string cannot leak into printk.

Signed-off-by: Kees Cook <keescook@chromium.org>
---
 .../net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h  |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h b/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h
index 871fc3c6d559..049f4c8d98a8 100644
--- a/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h
+++ b/drivers/net/wireless/rtlwifi/btcoexist/halbtcoutsrc.h
@@ -114,7 +114,7 @@ extern u32 btc_dbg_type[];
 
 
 #define	CL_SPRINTF	snprintf
-#define	CL_PRINTF	printk
+#define	CL_PRINTF(buf)	printk("%s", buf)
 
 #define	BTC_PRINT(dbgtype, dbgflag, printstr, ...)		\
 	do {							\
-- 
1.7.9.5


-- 
Kees Cook
Chrome OS Security

             reply	other threads:[~2014-06-30 20:39 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-30 20:38 Kees Cook [this message]
2014-07-01 18:29 ` [RESEND][PATCH] rtlwifi: btcoexist: avoid format string in printk John W. Linville
2014-07-01 18:31   ` Kees Cook

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