On Wed, 04 Dec 2024 00:55:31 +0100 Javier Carrasco javier.carrasco.cruz@gmail.com wrote:
The 'scan' local struct is used to push data to user space from a triggered buffer, but it has a hole between the two 16-bit data channels 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: 91f75ccf9f03 ("iio: temperature: tmp006: add triggered buffer support") Signed-off-by: Javier Carrasco javier.carrasco.cruz@gmail.com
Applied but dropped the stable tag. The patch this is fixing isn't in a release yet.
Jonathan
drivers/iio/temperature/tmp006.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/iio/temperature/tmp006.c b/drivers/iio/temperature/tmp006.c index 0c844137d7aa..02b27f471baa 100644 --- a/drivers/iio/temperature/tmp006.c +++ b/drivers/iio/temperature/tmp006.c @@ -252,6 +252,8 @@ static irqreturn_t tmp006_trigger_handler(int irq, void *p) } scan; s32 ret;
- memset(&scan, 0, sizeof(scan));
- ret = i2c_smbus_read_word_data(data->client, TMP006_VOBJECT); if (ret < 0) goto err;