From 4592411784ccf83f873f98ba94aeae2482783c9a Mon Sep 17 00:00:00 2001 From: Justin Stitt Date: Mon, 23 Oct 2023 20:26:13 +0000 Subject: scsi: csiostor: Replace deprecated strncpy() with strscpy() strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. 'hw' is kzalloc'd just before this string assignment: | hw = kzalloc(sizeof(struct csio_hw), GFP_KERNEL); ... which means any NUL-padding is redundant. Since CSIO_DRV_VERSION is a small string literal (smaller than sizeof(dest)): ... there is functionally no change in this swap from strncpy() to strscpy(). Nonetheless, let's make the change for robustness' sake -- as it will ensure that drv_version is _always_ NUL-terminated. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt Link: https://lore.kernel.org/r/20231023-strncpy-drivers-scsi-csiostor-csio_init-c-v1-1-5ea445b56864@google.com Reviewed-by: Kees Cook Signed-off-by: Martin K. Petersen --- drivers/scsi/csiostor/csio_init.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/csiostor/csio_init.c b/drivers/scsi/csiostor/csio_init.c index 0c32faefad7c..d649b7a2a879 100644 --- a/drivers/scsi/csiostor/csio_init.c +++ b/drivers/scsi/csiostor/csio_init.c @@ -521,7 +521,8 @@ static struct csio_hw *csio_hw_alloc(struct pci_dev *pdev) goto err; hw->pdev = pdev; - strncpy(hw->drv_version, CSIO_DRV_VERSION, 32); + strscpy(hw->drv_version, CSIO_DRV_VERSION, + sizeof(hw->drv_version)); /* memory pool/DMA pool allocation */ if (csio_resource_alloc(hw)) -- cgit v1.2.3