linux-kernel - [PATCH 4.18 070/123] b43legacy/leds: Ensure NUL-termination of LED name string

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Message-Id: <20180903165722.384943922@linuxfoundation.org>
Date:   Mon,  3 Sep 2018 18:56:54 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Michael Buesch <m@...s.ch>,
        Kalle Valo <kvalo@...eaurora.org>
Subject: [PATCH 4.18 070/123] b43legacy/leds: Ensure NUL-termination of LED name string

4.18-stable review patch.  If anyone has any objections, please let me know.

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

From: Michael Buesch <m@...s.ch>

commit 4d77a89e3924b12f4a5628b21237e57ab4703866 upstream.

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

Signed-off-by: Michael Buesch <m@...s.ch>
Cc: stable@...r.kernel.org
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/wireless/broadcom/b43legacy/leds.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/broadcom/b43legacy/leds.c
+++ b/drivers/net/wireless/broadcom/b43legacy/leds.c
@@ -101,7 +101,7 @@ static int b43legacy_register_led(struct
 	led->dev = dev;
 	led->index = led_index;
 	led->activelow = activelow;
-	strncpy(led->name, name, sizeof(led->name));
+	strlcpy(led->name, name, sizeof(led->name));
 
 	led->led_dev.name = led->name;
 	led->led_dev.default_trigger = default_trigger;