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From:   Ben Hutchings <ben@decadent.org.uk>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
CC:     akpm@linux-foundation.org, "Kalle Valo" <kvalo@codeaurora.org>,
        "=?UTF-8?q?Michael=20B=C3=BCsch?=" <m@bues.ch>
Date:   Sun, 09 Dec 2018 21:50:33 +0000
Message-ID: <lsq.1544392233.554562122@decadent.org.uk>
Subject: [PATCH 3.16 121/328] b43/leds: Ensure NUL-termination of LED name
 string
In-Reply-To: <lsq.1544392232.713909046@decadent.org.uk>
Sender: linux-kernel-owner@vger.kernel.org
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3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Büsch <m@bues.ch>

commit 2aa650d1950fce94f696ebd7db30b8830c2c946f upstream.

strncpy might not NUL-terminate the string, if the name equals the buffer size.
Use strlcpy instead.

Signed-off-by: Michael Buesch <m@bues.ch>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
 drivers/net/wireless/b43/leds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/b43/leds.c
+++ b/drivers/net/wireless/b43/leds.c
@@ -131,7 +131,7 @@ static int b43_register_led(struct b43_w
 	led->wl = dev->wl;
 	led->index = led_index;
 	led->activelow = activelow;
-	strncpy(led->name, name, sizeof(led->name));
+	strlcpy(led->name, name, sizeof(led->name));
 	atomic_set(&led->state, 0);
 
 	led->led_dev.name = led->name;