iio: pressure: bmp280: fix out-of-bounds access in sampling frequency lookup

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The sampling frequency tables store each frequency as an integer part and
a fractional part in micro units. num_sampling_freq_avail is initialized
to the number of flattened integer elements because read_avail() returns
the table as a flat array.

bmp280_write_sampling_frequency(), however, indexes the same table as a
two-dimensional array and uses num_sampling_freq_avail as the number of
rows. Convert the flattened element count back to the number of rows
before iterating over the table.

Fixes: 10b40ffba2 ("iio: pressure: bmp280: Add more tunable config parameters for BMP380")
Cc: stable@vger.kernel.org
Signed-off-by: Hui Su <sh_def@163.com>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>

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Hui Su 2026-08-11 10:52:53 +08:00 • committed by Jonathan Cameron

parent f0ea4824de

commit 56c423b233

1 changed files with 1 additions and 1 deletions

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drivers/iio/pressure/bmp280-core.c

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