Ubuntu
isc-dhcp package

Apparmor denies pid file creation for dhclient when started by network-manager

Bug #1905800 reported by Glenn Washburn
18
This bug affects 3 people
Affects Status Importance Assigned to Milestone
isc-dhcp (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

I'm using package isc-dhcp-client version 4.4.1-2.1ubuntu5

I'm getting these messages in syslog:

  dhclient[3308281]: Can't create /run/NetworkManager/dhclient-wlp23s1.pid: Permission denied
  audit: type=1400 audit(1606420037.168:811): apparmor="DENIED" operation="mknod" profile="/{,usr/}sbin/dhclient" name="/run/NetworkManager/dhclient-wlp23s1.pid" pid=3308281 comm="dhclient" requested_mask="c" denied_mask="c" fsuid=0 ouid=0

  dhclient[3308357]: Can't create /run/NetworkManager/dhclient6-wlp23s1.pid: Permission denied
  audit: type=1400 audit(1606420039.268:816): apparmor="DENIED" operation="mknod" profile="/{,usr/}sbin/dhclient" name="/run/NetworkManager/dhclient6-wlp23s1.pid" pid=3308357 comm="dhclient" requested_mask="c" denied_mask="c" fsuid=0 ouid=0

Adding "/run/NetworkManager/dhclient{,6}-*.pid lrw," to the apparmor profile in /etc/apparmor.d/sbin.dhclient fixes the issue.

TJ (tj)
Changed in isc-dhcp (Ubuntu):
status: New → Confirmed
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