skge: potential memory corruption in skge_get_regs()

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The "p" buffer is 0x4000 bytes long.  B3_RI_WTO_R1 is 0x190.  The value
of "regs->len" is in the 1-0x4000 range.  The bug here is that
"regs->len - B3_RI_WTO_R1" can be a negative value which would lead to
memory corruption and an abrupt crash.

Fixes: c3f8be9618 ("[PATCH] skge: expand ethtool debug register dump")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Dan Carpenter 2019-02-01 11:28:16 +03:00 • committed by David S. Miller

parent 5e66e35aab

commit 294c149a20

1 changed files with 4 additions and 2 deletions

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6

drivers/net/ethernet/marvell/skge.c

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