pivot_root audit modifier ignored when oldroot and newroot specified

Bug #1432045 reported by Tyler Hicks
This bug affects 1 person
Affects Status Importance Assigned to Milestone
apparmor (Ubuntu)

Bug Description

$ echo "/t { pivot_root oldroot=/ /a, }" | apparmor_parser -qS | md5sum
422b222b6608dff7aca3420062aad3db -
$ echo "/t { audit pivot_root oldroot=/ /a, }" | apparmor_parser -qS | md5sum
422b222b6608dff7aca3420062aad3db -
$ echo "/t { audit deny pivot_root oldroot=/ /a, }" | apparmor_parser -qS | md5sum
9e598c327781b16acdab2d3e939279ec -

Note that the audit modifier doesn't change the binary policy file but the audit deny modifier does.

Also, the binary policy file changes as expected on "audit pivot_root," and "audit pivot_root oldroot=/,". That is, this bug only seems to happen when oldroot and newroot are both specified.

Revision history for this message
Tyler Hicks (tyhicks) wrote :

Automated tests for this bug can be found here:


Tyler Hicks (tyhicks)
description: updated
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package apparmor - 2.9.1-0ubuntu8

apparmor (2.9.1-0ubuntu8) vivid; urgency=medium

  [ Steve Beattie ]
  * debian/rules: run make check on the libapparmor library
  * add-chromium-browser.patch: add support for chromium policies
    (LP: #1419294)
  * debian/apparmor.{init,upstart}: add support for triggering
    aa-profile-hook runs when packages are updated via snappy system
    image updates (LP: #1434143)
  * parser-fix_modifier_compilation_+_tests.patch: fix compilation
    of audit modifiers for exec and pivot_root and deny modifiers on
    link rules as well as significantly expand related tests
    (LP: #1431717, LP: #1432045, LP: #1433829)
  * tests-fix_systemd_breakage_in_pivot_root-lp1436109.patch: work
    around pivot_root test failures due to init=systemd (LP: #1436109)
  * GDM_X_authority-lp1432126.patch: add location GDM creates Xauthority
    file to X abstraction (LP: #1432126)

  [ Jamie Strandboge ]
  * easyprof-framework-policy.patch: add --include-templates-dir and
    --include-policy-groups-dir options to easyprof to support framework
    policy on snappy

  [ Robie Basak ]
  * Add /lib/apparmor/profile-load; moved from
    /lib/init/apparmor-profile-load from the upstart package. A wrapper at
    the original path is now provided by init-system-helpers. (LP: #1432683)
 -- Jamie Strandboge <email address hidden> Sat, 28 Mar 2015 07:22:30 -0500

Changed in apparmor (Ubuntu):
status: New → Fix Released
Revision history for this message
Steve Beattie (sbeattie) wrote :

A fix was committed for this in AppArmor upstream in trunk revision 2901 and on the 2.9 branch in revision 2870.

Changed in apparmor:
status: Confirmed → Fix Committed
milestone: none → 2.9.2
Steve Beattie (sbeattie)
Changed in apparmor:
status: Fix Committed → Fix Released
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