The validity of the pad field in struct v4l2_subdev_frame_interval was not
ensured by the V4L2 subdev IOCTL helper. Fix this.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-subdev.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 996c248..3fa1907 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -305,11 +305,23 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
fse);
}
- case VIDIOC_SUBDEV_G_FRAME_INTERVAL:
+ case VIDIOC_SUBDEV_G_FRAME_INTERVAL: {
+ struct v4l2_subdev_frame_interval *fi = arg;
+
+ if (fi->pad >= sd->entity.num_pads)
+ return -EINVAL;
+
return v4l2_subdev_call(sd, video, g_frame_interval, arg);
+ }
+
+ case VIDIOC_SUBDEV_S_FRAME_INTERVAL: {
+ struct v4l2_subdev_frame_interval *fi = arg;
+
+ if (fi->pad >= sd->entity.num_pads)
+ return -EINVAL;
- case VIDIOC_SUBDEV_S_FRAME_INTERVAL:
return v4l2_subdev_call(sd, video, s_frame_interval, arg);
+ }
case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: {
struct v4l2_subdev_frame_interval_enum *fie = arg;
--
1.8.3.2
--
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