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| author | Javier Carrasco <javier.carrasco.cruz@gmail.com> | 2024-11-25 22:16:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-17 13:40:56 +0100 |
| commit | ea703cda36da0dacb9a2fd876370003197d8a019 (patch) | |
| tree | 3579ec538f0079cac54e66012265bebe2d2c5d8c /drivers/iio | |
| parent | 979a0db76ceda8fe1f2f85a116bfe97620ebbadf (diff) | |
| download | linux-ea703cda36da0dacb9a2fd876370003197d8a019.tar.gz linux-ea703cda36da0dacb9a2fd876370003197d8a019.tar.bz2 linux-ea703cda36da0dacb9a2fd876370003197d8a019.zip | |
iio: dummy: iio_simply_dummy_buffer: fix information leak in triggered buffer
commit 333be433ee908a53f283beb95585dfc14c8ffb46 upstream.
The 'data' array is allocated via kmalloc() and it 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.
Use kzalloc for the memory allocation to avoid pushing uninitialized
information to userspace.
Cc: stable@vger.kernel.org
Fixes: 415f79244757 ("iio: Move IIO Dummy Driver out of staging")
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20241125-iio_memset_scan_holes-v1-9-0cb6e98d895c@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/dummy/iio_simple_dummy_buffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c index 4ca3f1aaff99..288880346707 100644 --- a/drivers/iio/dummy/iio_simple_dummy_buffer.c +++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c @@ -48,7 +48,7 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p) int i = 0, j; u16 *data; - data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL); + data = kzalloc(indio_dev->scan_bytes, GFP_KERNEL); if (!data) goto done; |