diff options
| author | Javier Carrasco <javier.carrasco.cruz@gmail.com> | 2024-12-04 02:55:31 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-12-08 19:51:35 +0300 |
| commit | 2f43d5200c7330143089bfd1f2440753bac10617 (patch) | |
| tree | 409d39dfe3f3d5f9e0e174ec0aede4db99b36ad2 | |
| parent | 64f43895b4457532a3cc524ab250b7a30739a1b1 (diff) | |
| download | linux-2f43d5200c7330143089bfd1f2440753bac10617.tar.xz | |
iio: temperature: tmp006: 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 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.
Fixes: 91f75ccf9f03 ("iio: temperature: tmp006: add triggered buffer support")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20241204-iio_memset_scan_holes-v2-1-3f941592a76d@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/temperature/tmp006.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |