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ath5k: add bounds check to pdadc table

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We check the bounds on pdadc once when correcting for
negative curves but not when we later copy values from
from the pdadc_tmp array, leading to a potential overrun.

Although we shouldn't hit this case in practice, let's
be consistent.

Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Acked-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Bob Copeland 2010-04-07 23:55:59 -04:00 committed by John W. Linville
parent a05988bbbe
commit 4f59fce9e0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath5k/phy.c
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@ -2557,7 +2557,7 @@ ath5k_combine_pwr_to_pdadc_curves(struct ath5k_hw *ah,
max_idx = (pdadc_n < table_size) ? pdadc_n : table_size;
/* Fill pdadc_out table */
while (pdadc_0 < max_idx)
while (pdadc_0 < max_idx && pdadc_i < 128)
pdadc_out[pdadc_i++] = pdadc_tmp[pdadc_0++];
/* Need to extrapolate above this pdgain? */