This bug was fixed in the package apparmor-easyprof-ubuntu - 1.2.28
---------------
apparmor-easyprof-ubuntu (1.2.28) utopic; urgency=medium
* ubuntu/calendar: add missing rule for org.freedesktop.DBus.Introspectable
on path /com/canonical/indicator/datetime/AlarmProperties (LP: #1374623)
* ubuntu/1.[12]/ubuntu-{sdk,webapp}: remove no longer needed rule for
/{,run/}shm/shm/WK2SharedMemory.[0-9]* (LP: #1197060)
* ubuntu/microphone:
- add temporary write access to /{run,dev}/shm/shmfd-* for QAudioRecorder
(LP: #1370218)
- explicitly deny read on /dev/
* ubuntu/1.1/webview: allow dbus send to RequestName on org.freedesktop.DBus
webapp-container needs corresponding 'bind' call on
org.freedesktop.Application, which we block elsewhere. webapp-container
shouldn't be doing this under confinement, but we allow this rule in
content_exchange, so just allow it to avoid confusion. (LP: #1357371)
-- Jamie Strandboge <ja...@ubuntu.com> Fri, 26 Sep 2014 15:21:37 -0500
** Changed in: apparmor-easyprof-ubuntu (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1370218
Title:
QAudioRecorder does not work properly under 'microphone' security
policy
Status in “apparmor” package in Ubuntu:
Triaged
Status in “apparmor-easyprof-ubuntu” package in Ubuntu:
Fix Released
Status in “qtmultimedia-opensource-src” package in Ubuntu:
Triaged
Bug description:
QAudioRecoder currently needs the following rules:
owner /{run,dev}/shm/shmfd* rwk,
The rules are this way because the shared memory files are not app
specific and is possible for one app to access another app's shared
memory file. Please update qtmultimedia-opensource-src so the files
are app-specific to better isolation the apps (this is something we
are doing elsewhere).
Longer term we'd like to have shared memory file mediation in
AppArmor.
Original report:
I recently wrote a small application[1] to spot an ancient issue I had using
QAudioRecorder on Ubuntu devices.
After I have installer gstreamer0.10-pulseaudio (otherwise "pulseaudio:" is
not listed as available source), I tried to start a record through
QAudioRecorder but it failed, giving me this output:
"shm_open() failed: Permission denied"
I've checked for some denials from apparmor (using 'dmesg | grep
DEN'), but none was found.
If I change the apparmor profile[2], so that my test application is
launched in a unconfined environment, QAudioRecorder works properly as
expected.
I run this test on my Nexus 5 (utopic-devel-proposed #185), but this
problem with shm happens also on i386 ubuntu-emulator (utopic-devel
#206).
Just for reference, this is the link to the original mail, stored in the
ubuntu-phone team mailing list archive:
http://lists.launchpad.net/ubuntu-phone/msg09842.html
[1] -
http://bazaar.launchpad.net/~verzegnassi-stefano/+junk/recorder-test/files
[2]
{
"policy_version": 1.2,
"template": "unconfined",
"policy_groups": []
}
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