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| author | Aleksandr Mishin <amishin@t-argos.ru> | 2024-07-03 17:45:06 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-07-29 21:31:23 +0200 |
| commit | b48aa991758999d4e8f9296c5bbe388f293ef465 (patch) | |
| tree | 327967e7ea9298aabfe0ab6912bf85003004853c /drivers/iio/adc/ad7606.h | |
| parent | Linux 6.11-rc1 (diff) | |
| download | linux-b48aa991758999d4e8f9296c5bbe388f293ef465.tar.xz linux-b48aa991758999d4e8f9296c5bbe388f293ef465.zip | |
staging: iio: frequency: ad9834: Validate frequency parameter value
In ad9834_write_frequency() clk_get_rate() can return 0. In such case
ad9834_calc_freqreg() call will lead to division by zero. Checking
'if (fout > (clk_freq / 2))' doesn't protect in case of 'fout' is 0.
ad9834_write_frequency() is called from ad9834_write(), where fout is
taken from text buffer, which can contain any value.
Modify parameters checking.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 12b9d5bf76bf ("Staging: IIO: DDS: AD9833 / AD9834 driver")
Suggested-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Aleksandr Mishin <amishin@t-argos.ru>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/20240703154506.25584-1-amishin@t-argos.ru
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/ad7606.h')
0 files changed, 0 insertions, 0 deletions