If webex is used in ubuntu 24.04 there's an apparmor error logged like this:
audit: type=1400 audit(1713968367.781:343): apparmor="DENIED" operation="capable" class="cap" profile="unprivileged_userns" pid=10844 comm="CiscoCollabHost" capability=21 capname="sys_admin"
This leads to an error in libcef.so and so Webex cannot start.
Since Cisco didn't properly include a repository for Webex, the update relies on the app running. So, this breaks updates and Webex cannot get an update that will probably fix this in the future.
I did fix this bug by adding a apparmor profile for Webex into a new file here "/etc/apparmor.d/Webex":
abi <abi/4.0>,
include <tunables/global>
profile Webex /opt/Webex/bin/CiscoCollabHost flags=(unconfined) {
userns,
# Site-specific additions and overrides. See local/README for details.
include if exists <local/Webex>
}
Afterwards you need to reload the profiles with
sudo systemctl reload apparmor
Have fun!
