diff options
| author | Justin Stitt <justinstitt@google.com> | 2023-12-07 21:42:22 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-12-10 19:08:58 +0000 |
| commit | f8dd2412ba66128de4325c187c9504c6da511bc8 (patch) | |
| tree | 4eccd2171daf497b855bbee0cea2ddbb87757baf /drivers/net/ethernet/qlogic | |
| parent | 378bc9a40ed8b6f1bac558a64b65d4754de89387 (diff) | |
qlcnic: 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.
We expect fw_info->fw_file_name to be NUL-terminated based on its use
within _request_firmware_prepare() wherein `name` refers to it:
| if (firmware_request_builtin_buf(firmware, name, dbuf, size)) {
| dev_dbg(device, "using built-in %s\n", name);
| return 0; /* assigned */
| }
... and with firmware_request_builtin() also via `name`:
| if (strcmp(name, b_fw->name) == 0) {
There is no evidence that NUL-padding is required.
Additionally replace size macro (QLC_FW_FILE_NAME_LEN) with
sizeof(fw_info->fw_file_name) to more directly tie the maximum buffer
size to the destination buffer:
Considering the above, a suitable replacement is `strscpy` [2] due to
the fact that it guarantees NUL-termination on the destination buffer
without unnecessarily NUL-padding.
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
Link: https://github.com/KSPP/linux/issues/90
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c index c95d56e56c59..b733374b4dc5 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c @@ -2092,8 +2092,8 @@ static int qlcnic_83xx_run_post(struct qlcnic_adapter *adapter) return -EINVAL; } - strncpy(fw_info->fw_file_name, QLC_83XX_POST_FW_FILE_NAME, - QLC_FW_FILE_NAME_LEN); + strscpy(fw_info->fw_file_name, QLC_83XX_POST_FW_FILE_NAME, + sizeof(fw_info->fw_file_name)); ret = request_firmware(&fw_info->fw, fw_info->fw_file_name, dev); if (ret) { @@ -2396,12 +2396,12 @@ static int qlcnic_83xx_get_fw_info(struct qlcnic_adapter *adapter) switch (pdev->device) { case PCI_DEVICE_ID_QLOGIC_QLE834X: case PCI_DEVICE_ID_QLOGIC_QLE8830: - strncpy(fw_info->fw_file_name, QLC_83XX_FW_FILE_NAME, - QLC_FW_FILE_NAME_LEN); + strscpy(fw_info->fw_file_name, QLC_83XX_FW_FILE_NAME, + sizeof(fw_info->fw_file_name)); break; case PCI_DEVICE_ID_QLOGIC_QLE844X: - strncpy(fw_info->fw_file_name, QLC_84XX_FW_FILE_NAME, - QLC_FW_FILE_NAME_LEN); + strscpy(fw_info->fw_file_name, QLC_84XX_FW_FILE_NAME, + sizeof(fw_info->fw_file_name)); break; default: dev_err(&pdev->dev, "%s: Invalid device id\n", |