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recursive chowning fixes #10517

Merged
merged 4 commits into from Oct 26, 2018
Commits on Oct 26, 2018
  1. chown-recursive: let's rework the recursive logic to use O_PATH

    poettering committed Oct 19, 2018
    That way we can pin a specific inode and analyze it and manipulate it
    without it being swapped out beneath our hands.
    
    Fixes a vulnerability originally found by Jann Horn from Google.
    
    CVE-2018-15687
    LP: #1796692
    https://bugzilla.redhat.com/show_bug.cgi?id=1639076
  2. chown-recursive: also drop ACLs when recursively chown()ing

    poettering committed Oct 19, 2018
    Let's better be safe than sorry and also drop ACLs.
  3. test: add test case for recursive chown()ing

    poettering committed Oct 19, 2018