This bug was fixed in the package apparmor - 4.1.0~beta5-0ubuntu14.1
---------------
apparmor (4.1.0~beta5-0ubuntu14.1) plucky; urgency=medium
* This is an SRU from Questing to Plucky, tracked in LP: #2110236
* Add patch to allow unprivileged_userns access to root dir
(LP: #2110616):
- d/p/u/unprivileged_userns_rootdir.patch
* Add patch to fix lsblk accesses on IBM System Z systems (LP: #2107402)
and execution from a confined context (LP: #2107455):
- d/p/u/lsblk-s390-fixes.patch
* Add patch to fix execution of various commands from confined contexts
(LP: #2110628):
- d/p/u/profiles_ensure_access_to_attach_path.patch
* Add patch to include new QtWebEngineProcess execution path in
plasmashell profile (LP: #2107723):
- d/p/u/plasmashell-QtWebEngineProcess-new-path.patch
* Add patch to allow /cvmfs fusermounts (LP: #2110624):
- d/p/u/fusermount3_cvmfs.patch
* Add patch to grant OpenVPN DNS accesses (LP: #2107596, LP: #2109029):
- d/p/u/openvpn_dnsfix.patch
* Add patch to expand allowed fusermount3 flags for fuse_overlayfs and
sshfs via fstab (LP: #2110626, LP: #2111807):
- d/p/u/fusermount3_allow_more_flags.patch
* Add patch to fix permission denials for iotop-c (LP: #2107727):
- d/p/u/profiles-give-iotop-c-additional-accesses.patch
* Add patch to fix parser handling of norelatime mount flag
(LP: #2110688):
- d/p/u/parser-fix-handling-of-norelatime-mount-rule-flag.patch
* Add patch to fix incorrect mount rule documentation in the apparmor.d
man page (LP: #2110630):
- d/p/u/fix-incorrect-mount-flag-apparmor.d-docs.patch
* Add patch to add regression tests for the above two patches:
- d/p/u/regression-verify-documented-mount-flag-behavior.patch
* d/p/u/remmina_mr_1348.patch, d/p/u/remmina-dbus-describeall.patch:
move the remmina profile to profiles/apparmor/profiles/extras to
disable it by default (LP: #2102033)
* debian/apparmor.install: remove the remmina profile entry
* debian/apparmor-profiles.install: add an entry for the remmina profile
* debian/apparmor.maintscript: remove the remmina profile upon upgrade
-- Ryan Lee <[email protected]> Wed, 27 May 2025 11:29:02 -0700
** Changed in: apparmor (Ubuntu Plucky)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/2110624
Title:
apparmor fusermount3 profile blocks mounts to /cvmfs/ subdirectories
Status in apparmor package in Ubuntu:
Fix Released
Status in apparmor source package in Plucky:
Fix Released
Status in apparmor source package in Questing:
Fix Released
Bug description:
SRU Justification:
[ Impact ]
fusermount3 lacked permissions to mount to /cvmfs subdirectories,
breaking usage of the CernVM FS.
[ Test Plan ]
* Run `sudo aa-status` and verify that a fusermount3 profile is loaded
* The following instructions are adapted from
https://cvmfs.readthedocs.io/en/stable/cpt-quickstart.html
- Install the cvmfs packages
+ `wget
https://cvmrepo.s3.cern.ch/cvmrepo/apt/cvmfs-release-latest_all.deb`
+ `sudo dpkg -i cvmfs-release-latest_all.deb`
+ `sudo apt-get -y update`
+ `sudo apt-get -y install cvmfs`
- Set up autofs configs by running `sudo cvmfs_config setup` and `sudo
systemctl restart autofs`
- Create `/etc/cvmfs/default.local` and add the lines
"CVMFS_REPOSITORIES=cvmfs-config.cern.ch", "CVMFS_CLIENT_PROFILE=single" to it
- Attempt to mount by running `cvmfs_config probe`
* Without the fix:
- The mount step fails with a permission denial error
- AppArmor generates denial logs for fusermount3 denying the mount syscall
* With the fix: the mount should succeed with no AppArmor logs being
generated
[ Where problems could occur ]
Adding a rule to allow mounting to /cvmfs subdirectories loosens
confinement on a profile. However, if a user manually modified the
installed profiles, then the package upgrade would cause conflicts,
and rejection of the incoming changes (either by hand during an
interactive upgrade or automatically during an batch unattended
upgrade) would result in end users not getting the packaged fix.
[ Other Info ]
This bug was originally reported at
https://gitlab.com/apparmor/apparmor/-/merge_requests/1587.
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https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/2110624/+subscriptions
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