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| author | Javier Carrasco <javier.carrasco.cruz@gmail.com> | 2024-11-25 22:16:12 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-17 13:40:56 +0100 |
| commit | 8193941bc4fe7247ff13233f328aea709f574554 (patch) | |
| tree | 1e61aa96a5524d3f2aef5976137303bc0ca0e4b2 | |
| parent | 565814cbbaa674d2901428796801de49a611e59d (diff) | |
| download | linux-8193941bc4fe7247ff13233f328aea709f574554.tar.gz linux-8193941bc4fe7247ff13233f328aea709f574554.tar.bz2 linux-8193941bc4fe7247ff13233f328aea709f574554.zip | |
iio: adc: rockchip_saradc: fix information leak in triggered buffer
commit 38724591364e1e3b278b4053f102b49ea06ee17c upstream.
The 'data' local struct is used to push data to user space from a
triggered buffer, but it does not set values for inactive channels, as
it only uses iio_for_each_active_channel() to assign new values.
Initialize the struct to zero before using it to avoid pushing
uninitialized information to userspace.
Cc: stable@vger.kernel.org
Fixes: 4e130dc7b413 ("iio: adc: rockchip_saradc: Add support iio buffers")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20241125-iio_memset_scan_holes-v1-4-0cb6e98d895c@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/iio/adc/rockchip_saradc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c index 240cfa391674..dfd47a6e1f4a 100644 --- a/drivers/iio/adc/rockchip_saradc.c +++ b/drivers/iio/adc/rockchip_saradc.c @@ -368,6 +368,8 @@ static irqreturn_t rockchip_saradc_trigger_handler(int irq, void *p) int ret; int i, j = 0; + memset(&data, 0, sizeof(data)); + mutex_lock(&info->lock); iio_for_each_active_channel(i_dev, i) { |