[Q] Is MX Player one of the vulnerable 3rd party apps using libutils?

A new Ars Technica article (of which I cannot link to because my account has not posted enough) details possible 3rd party media app vulnerabilities. The name of the article is "a-billion-android-phones-are-vulnerable-to-new-stagefright-bugs".
Apparently, even after receiving the not yet released Google patch, your phone may still be vulnerable if 3rd party media playing apps use certain compromised code. Can we get confirmation that MX is in the clear?