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From: Azeem Shaikh <azeemshaikh38@gmail.com>
To: Nilesh Javali <njavali@marvell.com>,
	Manish Rangankar <mrangankar@marvell.com>,
	GR-QLogic-Storage-Upstream@marvell.com
Cc: linux-hardening@vger.kernel.org,
	Azeem Shaikh <azeemshaikh38@gmail.com>,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: [PATCH] scsi: bnx2i: Replace all non-returning strlcpy with strscpy
Date: Wed, 17 May 2023 14:31:30 +0000	[thread overview]
Message-ID: <20230517143130.1519941-1-azeemshaikh38@gmail.com> (raw)

strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
---
 drivers/scsi/bnx2i/bnx2i_init.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/bnx2i/bnx2i_init.c b/drivers/scsi/bnx2i/bnx2i_init.c
index 2b3f0c10478e..872ad37e2a6e 100644
--- a/drivers/scsi/bnx2i/bnx2i_init.c
+++ b/drivers/scsi/bnx2i/bnx2i_init.c
@@ -383,7 +383,7 @@ int bnx2i_get_stats(void *handle)
 	if (!stats)
 		return -ENOMEM;
 
-	strlcpy(stats->version, DRV_MODULE_VERSION, sizeof(stats->version));
+	strscpy(stats->version, DRV_MODULE_VERSION, sizeof(stats->version));
 	memcpy(stats->mac_add1 + 2, hba->cnic->mac_addr, ETH_ALEN);
 
 	stats->max_frame_size = hba->netdev->mtu;


             reply	other threads:[~2023-05-17 14:31 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-17 14:31 Azeem Shaikh [this message]
2023-05-17 19:13 ` [PATCH] scsi: bnx2i: Replace all non-returning strlcpy with strscpy Kees Cook
2023-05-22 19:39 ` Kees Cook

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