John, did you read more than three words of the report?  We’re talking
about a classic snap inheriting an fd from a classic snap (the same
classic snap, in fact) for a file to which they should both have access
(because they’re classic snaps).  There can’t be information leaking
across a security boundary when there’s no security boundary.  And if
there were a security boundary, it sure wouldn’t be a very good one if
you could get around it by invoking the binary at a different path.

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https://bugs.launchpad.net/bugs/1849753

Title:
  AppArmor profile prohibits classic snap from inheriting file
  descriptors

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