What encryption uses Qubes 4.2 for disk encryption, LUKS or LUKS 2.0?

As many of us probably know, Tails OS moved to LUKS 2.0 in its new versions, because LUKS 2.0 more reliable, hardened and contains no known vulnerabilities, but I did not see any mention of such in the description, to the new version of Qubes. Does it still use LUKS? Then why, if now is stronger version of this encryption protocol? They say the old LUKS contains vulerability. Or at least it’s a weaker encryption protocol than previously thought.

LUKS2 is used by default since Qubes OS 4.1.

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