linux-kernel - [PATCH linux-next] rpmsg: use strscpy() to instead of strncpy()

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: <202212231044105692444@zte.com.cn>
Date:   Fri, 23 Dec 2022 10:44:10 +0800 (CST)
From:   <yang.yang29@....com.cn>
To:     <andersson@...nel.org>
Cc:     <mathieu.poirier@...aro.org>, <linux-remoteproc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <xu.panda@....com.cn>,
        <yang.yang29@....com.cn>
Subject: [PATCH linux-next] rpmsg: use strscpy() to instead of strncpy()

From: Xu Panda <xu.panda@....com.cn>

The implementation of strscpy() is more robust and safer.
That's now the recommended way to copy NUL-terminated strings.

Signed-off-by: Xu Panda <xu.panda@....com.cn>
Signed-off-by: Yang Yang <yang.yang29@....com>
---
 drivers/rpmsg/rpmsg_ns.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/rpmsg/rpmsg_ns.c b/drivers/rpmsg/rpmsg_ns.c
index c70ad03ff2e9..c7b5b60aef4d 100644
--- a/drivers/rpmsg/rpmsg_ns.c
+++ b/drivers/rpmsg/rpmsg_ns.c
@@ -48,9 +48,7 @@ static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len,
 	}

 	/* don't trust the remote processor for null terminating the name */
-	msg->name[RPMSG_NAME_SIZE - 1] = '\0';
-
-	strncpy(chinfo.name, msg->name, sizeof(chinfo.name));
+	strscpy(chinfo.name, msg->name, sizeof(chinfo.name));
 	chinfo.src = RPMSG_ADDR_ANY;
 	chinfo.dst = rpmsg32_to_cpu(rpdev, msg->addr);

-- 
2.15.2