cmd64x: potential buffer overflow in cmd64x_program_timings()
[ Upstream commit 117fcc3053
]
The "drive->dn" value is a u8 and it is controlled by root only, but
it could be out of bounds here so let's check.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -66,6 +66,9 @@ static void cmd64x_program_timings(ide_drive_t *drive, u8 mode)
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struct ide_timing t;
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u8 arttim = 0;
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if (drive->dn >= ARRAY_SIZE(drwtim_regs))
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return;
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ide_timing_compute(drive, mode, &t, T, 0);
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/*
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