Lubeboy

So there's this exec at work who does snow, makes bad decisions, basically doesn't know his job, only got the job because he used to work at the company a while back. My department works closely with his department. Lately he's been making a lot of bad calls and it's impacting the quality of our work. Unfortunately the higher ups don't really see this. Some days I feel like I wish I could do something, but in the end all I can do is suck it up and do my job. Other than that I enjoy where I work. Anyone have any advice?