Since a3ab6d42 "apparmor: convert libvirtd profile to a named profile" the detection of the subelement for qemu_bridge_helper is wrong. In combination with the older 123cc3e1 "apparmor: allow /usr/lib/qemu/qemu-bridge-helper" it now detects qemu-bridge-helper no more with its path, but instead as a proper subelement of the named profile like: label=libvirtd//qemu_bridge_helper In the same fashion the reverse rule in the qemu_bridge_helper sub-profile still uses the path and not the named profile label. Triggering denies like: apparmor="DENIED" operation="file_inherit" profile="libvirtd//qemu_bridge_helper" pid=5629 comm="qemu-bridge-hel" family="unix" sock_type="stream" protocol=0 requested_mask="send receive" denied_mask="send receive" addr=none peer_addr=none peer="libvirtd" This patch fixes the unix socket rules for the communication between libvirtd and qemu-bridge-helper to match that. Fixes: a3ab6d42d825499af44b8f19f9299e150d9687bc Fixes: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1655111 Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com> --- src/security/apparmor/usr.sbin.libvirtd | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/security/apparmor/usr.sbin.libvirtd b/src/security/apparmor/usr.sbin.libvirtd index 29f9936ad9..172972e525 100644 --- a/src/security/apparmor/usr.sbin.libvirtd +++ b/src/security/apparmor/usr.sbin.libvirtd @@ -62,8 +62,8 @@ profile libvirtd /usr/sbin/libvirtd flags=(attach_disconnected) { signal (send) set=("kill", "term") peer=unconfined, # For communication/control to qemu-bridge-helper - unix (send, receive) type=stream addr=none peer=(label=/usr/sbin/libvirtd//qemu_bridge_helper), - signal (send) set=("term") peer=/usr/sbin/libvirtd//qemu_bridge_helper, + unix (send, receive) type=stream addr=none peer=(label=libvirtd//qemu_bridge_helper), + signal (send) set=("term") peer=libvirtd//qemu_bridge_helper, # allow connect with openGraphicsFD, direction reversed in newer versions unix (send, receive) type=stream addr=none peer=(label=libvirt-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*), @@ -121,7 +121,7 @@ profile libvirtd /usr/sbin/libvirtd flags=(attach_disconnected) { network inet stream, # For communication/control from libvirtd - unix (send, receive) type=stream addr=none peer=(label=/usr/sbin/libvirtd), + unix (send, receive) type=stream addr=none peer=(label=libvirtd), signal (receive) set=("term") peer=/usr/sbin/libvirtd, signal (receive) set=("term") peer=libvirtd, -- 2.25.0