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| author | Javier Carrasco <javier.carrasco.cruz@gmail.com> | 2024-11-26 00:16:10 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-12-07 20:23:42 +0300 |
| commit | 75f339d3ecd38cb1ce05357d647189d4a7f7ed08 (patch) | |
| tree | ede5d0d2b3bf55a5a5672e6a5e24146ec01c6107 /drivers/iio | |
| parent | 6007d10c5262f6f71479627c1216899ea7f09073 (diff) | |
| download | linux-75f339d3ecd38cb1ce05357d647189d4a7f7ed08.tar.xz | |
iio: adc: ti-ads1119: fix information leak in triggered buffer
The 'scan' local struct is used to push data to user space from a
triggered buffer, but it has a hole between the sample (unsigned int)
and the timestamp. This hole is never initialized.
Initialize the struct to zero before using it to avoid pushing
uninitialized information to userspace.
Cc: stable@vger.kernel.org
Fixes: a9306887eba4 ("iio: adc: ti-ads1119: Add driver")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Link: https://patch.msgid.link/20241125-iio_memset_scan_holes-v1-2-0cb6e98d895c@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/ti-ads1119.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/adc/ti-ads1119.c b/drivers/iio/adc/ti-ads1119.c index e9d9d4d46d38..2615a275acb3 100644 --- a/drivers/iio/adc/ti-ads1119.c +++ b/drivers/iio/adc/ti-ads1119.c @@ -506,6 +506,8 @@ static irqreturn_t ads1119_trigger_handler(int irq, void *private) unsigned int index; int ret; + memset(&scan, 0, sizeof(scan)); + if (!iio_trigger_using_own(indio_dev)) { index = find_first_bit(indio_dev->active_scan_mask, iio_get_masklength(indio_dev)); |