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atmel: using strlcpy() to avoid possible buffer overflows

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'firmware' is a module param which may been longer than firmware_id,
so using strlcpy() to guard against overflows. Also priv is allocated
with zeroed memory,no need to set firmware_id[0] to '\0'.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
YueHaibing 2018-06-30 14:33:41 +08:00 committed by Kalle Valo
parent 04614fe46f
commit f9cbaeb529
1 changed files with 1 additions and 2 deletions
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3
drivers/net/wireless/atmel/atmel.c
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@ -1516,10 +1516,9 @@ struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
priv->present_callback = card_present;
priv->card = card;
priv->firmware = NULL;
priv->firmware_id[0] = '\0';
priv->firmware_type = fw_type;
if (firmware) /* module parameter */
strcpy(priv->firmware_id, firmware);
strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id));
priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI;
priv->station_state = STATION_STATE_DOWN;
priv->do_rx_crc = 0;