Security Advisory 2021-01-19-1 - dnsmasq multiple vulnerabilities

@Ellah1 @TopDog Did you just upgrade the dnsmasq package, or did you upgrade the whole system to 19.07.6? Just curious since it doesn't seem like dnsmasq would cause issues with sqm. It might be good to bring up this concern in the 19.07.6 thread if it wasn't just dnsmasq you upgraded: OpenWrt 19.07.6 service release