Sorry for being the wicked witch arriving late at what looks like a decimal-only gabberfest, but I could not help smiling at the term 'corruption' - apparently just because the data is hexadecimal rather than decimal. Or to put it another way, are you sure you should be filtering out the hex rather than taking it at face value?

What about just converting it to decimal instead, e.g. see https://perldoc.perl.org/functions/hex.html

Update: If you want to limit the data to a range of values, you should STILL convert from hex to decimal first and then apply the test. In other words just forget the idea that fffffff is corrupt because e.g. 0000000A is only 10 in decimal - quite a low value and you might want to include the value 10!

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