Hi Hans,
The patch ed45ce2cc0b3: "[media] v4l2-subdev: add support for the new
edid ioctls" from Aug 10, 2012, needs an overflow check the same as the
other cases in that switch statement.
drivers/media/v4l2-core/v4l2-ioctl.c
2200 case VIDIOC_SUBDEV_G_EDID:
2201 case VIDIOC_SUBDEV_S_EDID: {
2202 struct v4l2_subdev_edid *edid = parg;
2203
2204 if (edid->blocks) {
2205 *user_ptr = (void __user *)edid->edid;
2206 *kernel_ptr = (void *)&edid->edid;
2207 *array_size = edid->blocks * 128;
^^^^^^^^^^^^^^^^^^
This can overflow.
2208 ret = 1;
2209 }
2210 break;
2211 }
regards,
dan carpenter
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