Exact meaning of the issue mentioned on Errata document
This would only affect you if you are using the SMBus. The proper spec is as follow (from the datasheet):



In the errata the actual performance is described:

 

So it meets the SMBus spec if Vdd is > 4V. If Vdd &lt; 4V (down to 2.7V) it may be as low as 0.7V. 

In practice this would likely mean a reduction in noise margin rather than a failure, and only if Vdd &lt; 4V, and only for SMBus inputs.