If you have the +1 to all stat buff from consuming the blood rose potion, you will gain +1 to all your stats every time you save and load the game. Apparently it reapplies the buff when you load the game, adding an additional +1 to the buff.
Definitely a bit of a problem. I was wondering why my character had so many memory slots, and then I noticed I had +8 to all stats out of nowhere.