*** This bug is a duplicate of bug 2046844 ***
https://bugs.launchpad.net/bugs/2046844
Hi cipricus,
can you specify how and where your firefox was installed? We are trying
to support multiple variations including downloading directly from
mozilla if it is installed to the standard location?
mruffell is correct in his assessment that this is due to firefox not correctly
handling user namespace mediation. This can be seen in your dmesg with the
following messages
[ 69.033622] audit: type=1400 audit(1709714939.278:138): apparmor="AUDIT"
operation="userns_create" class="namespace" info="Userns create - transitioning
profile" profile="unconfined" pid=2922 comm=495043204C61756E6368
requested="userns_create" target="unprivileged_userns"
[ 69.037108] audit: type=1400 audit(1709714939.282:139): apparmor="DENIED"
operation="capable" class="cap" profile="unprivileged_userns" pid=2982
comm=53616E64626F7820466F726B6564 capability=21 capname="sys_admin"
Unfortunately firefox does not handle the error returned when it tries an
operation that require sys_admin capability gracefully resulting in the crash.
mruffell has already provided all the relevant links so I will just supplement
that information
1. The recommended way is updating the firefox profile in
/etc/apparmor.d/firefox by adding the location you have firefox
installed, and then reloading the profile with sudo apparmor_parser -r
/etc/apparmor.d/firefox
2. You can disable user namespaces, this will keep firefox from trying
to use them as part of ts sandbox https://lwn.net/Articles/673597/
3. the least recommended way to fix this is you can disable the finer
grained user namespace restrictions as outlined in
https://ubuntu.com/blog/ubuntu-23-10-restricted-unprivileged-user-
namespaces
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2056297
Title:
Non-flatpak Firefox-based browsers crash with kernel 6.8.0-11-generic
in 24.04
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2056297/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
