linux-kernel - [PATCH 3.16 122/328] b43legacy/leds: Ensure NUL-termination of LED name string

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Message-ID: <lsq.1544392233.468704329@decadent.org.uk>
Date:   Sun, 09 Dec 2018 21:50:33 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Kalle Valo" <kvalo@...eaurora.org>,
        "Michael Büsch" <m@...s.ch>
Subject: [PATCH 3.16 122/328] b43legacy/leds: Ensure NUL-termination of
 LED name string

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Michael Büsch <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>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
[bwh: Backported to 3.16: adjust filename]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/wireless/b43legacy/leds.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/b43legacy/leds.c
+++ b/drivers/net/wireless/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;