linux-kernel - [PATCH] RDMA/bnxt_re: Call strscpy() with correct size argument

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>] [day] [month] [year] [list]

Message-ID: <20250901150038.227036-2-thorsten.blum@linux.dev>
Date: Mon,  1 Sep 2025 17:00:39 +0200
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Selvin Xavier <selvin.xavier@...adcom.com>,
	Kalesh AP <kalesh-anakkur.purayil@...adcom.com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Leon Romanovsky <leon@...nel.org>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
	linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/bnxt_re: Call strscpy() with correct size argument

In bnxt_re_register_ib(), strscpy() is called with the length of the
source string rather than the size of the destination buffer.

This is fine as long as the destination buffer is larger than the source
string, but we should still use the destination buffer size instead to
call strscpy() as intended. And since 'node_desc' has a fixed size, we
can safely omit the size argument and let strscpy() infer it using
sizeof().

Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 drivers/infiniband/hw/bnxt_re/main.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/bnxt_re/main.c b/drivers/infiniband/hw/bnxt_re/main.c
index df7cf8d68e27..0718421bbf09 100644
--- a/drivers/infiniband/hw/bnxt_re/main.c
+++ b/drivers/infiniband/hw/bnxt_re/main.c
@@ -1323,8 +1323,7 @@ static int bnxt_re_register_ib(struct bnxt_re_dev *rdev)
 
 	/* ib device init */
 	ibdev->node_type = RDMA_NODE_IB_CA;
-	strscpy(ibdev->node_desc, BNXT_RE_DESC " HCA",
-		strlen(BNXT_RE_DESC) + 5);
+	strscpy(ibdev->node_desc, BNXT_RE_DESC " HCA");
 	ibdev->phys_port_cnt = 1;
 
 	addrconf_addr_eui48((u8 *)&ibdev->node_guid, rdev->netdev->dev_addr);
-- 
2.51.0