From: Javier Carrasco Date: Mon, 25 Nov 2024 21:16:10 +0000 (+0100) Subject: iio: adc: ti-ads1119: fix information leak in triggered buffer X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=75f339d3ecd38cb1ce05357d647189d4a7f7ed08;p=users%2Fjedix%2Flinux-maple.git 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 Reviewed-by: Francesco Dolcini Link: https://patch.msgid.link/20241125-iio_memset_scan_holes-v1-2-0cb6e98d895c@gmail.com Signed-off-by: Jonathan Cameron --- diff --git a/drivers/iio/adc/ti-ads1119.c b/drivers/iio/adc/ti-ads1119.c index e9d9d4d46d380..2615a275acb31 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));