linux-kernel - [PATCH] wifi: carl9170: Add __nonstring annotations for unterminated strings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250310222339.work.654-kees@kernel.org>
Date: Mon, 10 Mar 2025 15:23:40 -0700
From: Kees Cook <kees@...nel.org>
To: Christian Lamparter <chunkeey@...glemail.com>
Cc: Kees Cook <kees@...nel.org>,
	Johannes Berg <johannes@...solutions.net>,
	linux-wireless@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: [PATCH] wifi: carl9170: Add __nonstring annotations for unterminated strings

When a character array without a terminating NUL character has a static
initializer, GCC 15's -Wunterminated-string-initialization will only
warn if the array lacks the "nonstring" attribute[1]. Mark the arrays
with __nonstring to and correctly identify the char array as "not a C
string" and thereby eliminate the warning.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178 [1]
Cc: Christian Lamparter <chunkeey@...glemail.com>
Cc: Johannes Berg <johannes@...solutions.net>
Cc: linux-wireless@...r.kernel.org
Signed-off-by: Kees Cook <kees@...nel.org>
---
 drivers/net/wireless/ath/carl9170/fw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/carl9170/fw.c b/drivers/net/wireless/ath/carl9170/fw.c
index 4c1aecd1163c..419f5530f885 100644
--- a/drivers/net/wireless/ath/carl9170/fw.c
+++ b/drivers/net/wireless/ath/carl9170/fw.c
@@ -15,7 +15,7 @@
 #include "fwcmd.h"
 #include "version.h"
 
-static const u8 otus_magic[4] = { OTUS_MAGIC };
+static const u8 otus_magic[4] __nonstring = { OTUS_MAGIC };
 
 static const void *carl9170_fw_find_desc(struct ar9170 *ar, const u8 descid[4],
 	const unsigned int len, const u8 compatible_revision)
-- 
2.34.1