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media: pci: mg4b: fix uninitialized iio scan data

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Fix potential leak of uninitialized stack data to userspace by ensuring
that the `scan` structure is zeroed before use.

Fixes: 0ab13674a9 ("media: pci: mgb4: Added Digiteq Automotive MGB4 driver")
Cc: stable@vger.kernel.org
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
David Lechner 2025-07-22 17:05:46 -05:00 committed by Hans Verkuil
parent faee7aaf87
commit c0d3f6969b
1 changed files with 1 additions and 1 deletions
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2
drivers/media/pci/mgb4/mgb4_trigger.c
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@ -91,7 +91,7 @@ static irqreturn_t trigger_handler(int irq, void *p)
struct {
u32 data;
s64 ts __aligned(8);
} scan;
} scan = { };
scan.data = mgb4_read_reg(&st->mgbdev->video, 0xA0);
mgb4_write_reg(&st->mgbdev->video, 0xA0, scan.data);