6.17-stable review patch. If anyone has any objections, please let me know.
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From: David Lechner dlechner@baylibre.com
commit c0d3f6969bb4d72476cfe7ea9263831f1c283704 upstream.
Fix potential leak of uninitialized stack data to userspace by ensuring that the `scan` structure is zeroed before use.
Fixes: 0ab13674a9bd ("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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/media/pci/mgb4/mgb4_trigger.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/media/pci/mgb4/mgb4_trigger.c +++ b/drivers/media/pci/mgb4/mgb4_trigger.c @@ -91,7 +91,7 @@ static irqreturn_t trigger_handler(int i 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);