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bnxt_en: Use memcpy to copy VPD field info. 

Using strlcpy() to copy from VPD is not correct because VPD strings
are not necessarily NULL terminated.  Use memcpy() to copy the VPD
length up to the destination buffer size - 1.  The destination is
zeroed memory so it will always be NULL terminated.

Fixes: a0d0fd70fe ("bnxt_en: Read partno and serialno of the board from VPD")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vasundhara Volam 2020-09-20 21:08:54 -04:00 committed by David S. Miller
parent fe81d9f618
commit 492adcf481
1 changed files with 5 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -12090,7 +12090,7 @@ static int bnxt_init_mac_addr(struct bnxt *bp)
static void bnxt_vpd_read_info(struct bnxt *bp)
{
struct pci_dev *pdev = bp->pdev;
int i, len, pos, ro_size;
int i, len, pos, ro_size, size;
ssize_t vpd_size;
u8 *vpd_data;
@ -12125,7 +12125,8 @@ static void bnxt_vpd_read_info(struct bnxt *bp)
if (len + pos > vpd_size)
goto read_sn;
strlcpy(bp->board_partno, &vpd_data[pos], min(len, BNXT_VPD_FLD_LEN));
size = min(len, BNXT_VPD_FLD_LEN - 1);
memcpy(bp->board_partno, &vpd_data[pos], size);
read_sn:
pos = pci_vpd_find_info_keyword(vpd_data, i, ro_size,
@ -12138,7 +12139,8 @@ read_sn:
if (len + pos > vpd_size)
goto exit;
strlcpy(bp->board_serialno, &vpd_data[pos], min(len, BNXT_VPD_FLD_LEN));
size = min(len, BNXT_VPD_FLD_LEN - 1);
memcpy(bp->board_serialno, &vpd_data[pos], size);
exit:
kfree(vpd_data);
}