In the Linux kernel, the following vulnerability has been resolved: iio: pressure: bmp280: fix out-of-bounds access in sampling frequency l

In the Linux kernel, the following vulnerability has been resolved:

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

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.