linux-kernel - [PATCH] Staging: unisys: fix potential format string leak

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Message-ID: <20151208210701.GA16332@www.outflux.net>
Date:	Tue, 8 Dec 2015 13:07:01 -0800
From:	Kees Cook <keescook@...omium.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Benjamin Romer <benjamin.romer@...sys.com>,
	David Kershner <david.kershner@...sys.com>,
	Shraddha Barke <shraddha.6596@...il.com>,
	Erik Arfvidson <erik.arfvidson@...sys.com>,
	sparmaintainer@...sys.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] Staging: unisys: fix potential format string leak

Since "name" is always used directly, force "%s" for the kthread
format string to avoid any potential format string leaks.

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

diff --git a/drivers/staging/unisys/visorhba/visorhba_main.c b/drivers/staging/unisys/visorhba/visorhba_main.c
index c119f20dfd44..89712144f804 100644
--- a/drivers/staging/unisys/visorhba/visorhba_main.c
+++ b/drivers/staging/unisys/visorhba/visorhba_main.c
@@ -167,7 +167,7 @@ static int visor_thread_start(struct visor_thread_info *thrinfo,
 {
 	/* used to stop the thread */
 	init_completion(&thrinfo->has_stopped);
-	thrinfo->task = kthread_run(threadfn, thrcontext, name);
+	thrinfo->task = kthread_run(threadfn, thrcontext, "%s", name);
 	if (IS_ERR(thrinfo->task)) {
 		thrinfo->id = 0;
 		return PTR_ERR(thrinfo->task);
-- 
1.9.1


-- 
Kees Cook
Chrome OS & Brillo Security
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