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net/ethernet/qlogic/qed: force the string buffer NULL-terminated

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[ Upstream commit 3690c8c9a8 ]

strncpy() does not ensure NULL-termination when the input string
size equals to the destination buffer size 30.
The output string is passed to qed_int_deassertion_aeu_bit()
which calls DP_INFO() and relies NULL-termination.

Use strlcpy instead. The other conditional branch above strncpy()
needs no fix as snprintf() ensures NULL-termination.

This issue is identified by a Coccinelle script.

Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Wang Xiayang
2019-07-31 16:15:42 +08:00
committed by Greg Kroah-Hartman
parent 4132b908c8
commit 77a6e51271
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/qlogic/qed/qed_int.c
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@@ -939,7 +939,7 @@ static int qed_int_deassertion(struct qed_hwfn *p_hwfn,
snprintf(bit_name, 30,
p_aeu->bit_name, num);
else
strncpy(bit_name,
strlcpy(bit_name,
p_aeu->bit_name, 30);
/* We now need to pass bitmask in its