octeontx2-af: cn10k: fix an array overflow in is_lmac_valid()

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The value of "lmac_id" can be controlled by the user and if it is larger
then the number of bits in long then it reads outside the bitmap.
The highest valid value is less than MAX_LMAC_PER_CGX (4).

Fixes: 91c6945ea1 ("octeontx2-af: cn10k: Add RPM MAC support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Dan Carpenter 2021-03-02 14:21:54 +03:00 • committed by David S. Miller

parent 95b39f07a1

commit 2378b2c9ec

1 changed files with 3 additions and 1 deletions

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drivers/net/ethernet/marvell/octeontx2/af/cgx.c

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