I just tested 5.21/stable and couldn't reproduce as it properly disable
the /proc/sys/kernel/apparmor_restrict_unprivileged_userns and
/proc/sys/kernel/apparmor_restrict_unprivileged_unconfined that would
otherwise have caused those denials.
Marking as incomplete until you can reproduce with 5.21/stable (5.20
being EOL). Thanks
** Changed in: lxd (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/2057927
Title:
lxd vga console throws "Operation not permitted" error
Status in apparmor package in Ubuntu:
Confirmed
Status in lxd package in Ubuntu:
Incomplete
Bug description:
Since I upgraded to Noble the lxd vga console doesn't work anymore. I
am using the lxd latest/stable snap (5.20-f3dd836). When trying to
attach a vga console to an lxd vm I get:
unshare: write failed /proc/self/uid_map: Operation not permitted
It seems to be related to apparmor, I can see a matching DENIAL
message in dmesg:
[ 4735.233989] audit: type=1400 audit(1710419600.517:300):
apparmor="DENIED" operation="capable" class="cap"
profile="unprivileged_userns" pid=13157 comm="unshare" capability=21
capname="sys_admin"
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