Samsung has actually been doing a pretty phenomenal job of keeping their devices up to date with the latest Google security patches. This month’s arrival to the Galaxy S6 Edge is no exception, but it’s noteworthy in that it includes a patch for a vague “critical security vulnerability.”

Some are speculating that the vulnerability in question is the QuadRooter vulnerability that made headlines recently. Although Samsung hasn’t been specific about what this critical security hole is, rumors that it’s the QuadRooter patch are unlikely to be true. 

See also: Quadrooter: the latest Android security flaw62

Aside from that big security patch, there’s not a whole lot to report here. The update brings some improvements to memory efficiency, and it makes the Galaxy S6 Edge better at closing unused applications running in the background. Samsung is also reporting increased stability. Basically, it’s your run-of-the-mill incremental update. Still, with that major security hole fixed, you might want to go out of your way to make sure you pick it up.

Firmware version G925IDVS3EPH2 is just starting to roll out, so you might not see it available for your device just yet. To check and see if it is, navigate to Settings > About phone > Check for updates.

Let us know if this update is available in your region yet, and chime in on what “critical security vulnerability” you think is being patched here in the comments below.

See also: Galaxy S6 Edge review follow-up: three months later56