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Kernel 4.13 introduced finer-grained ptrace checks https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?h=v4.13.2&id=290f458a4f16f9cf6cb6562b249e69fe1c3c3a07 With kernel 4.13 and apparmor 2.11, simply starting libvirtd results in the following apparmor denial type=AVC msg=audit(1506112085.645:954): apparmor="DENIED" operation="ptrace" profile="/usr/sbin/libvirtd" pid=6984 comm="libvirtd" requested_mask="trace" denied_mask="trace" peer="unconfined" Attempting to start an unconfined domain results in type=AVC msg=audit(1506112301.227:1112): apparmor="DENIED" operation="ptrace" profile="/usr/sbin/libvirtd" pid=7498 comm="libvirtd" requested_mask="trace" denied_mask="trace" peer="/usr/sbin/libvirtd" And attempting to start a confined domain results in type=AVC msg=audit(1506112631.408:1312): apparmor="DENIED" operation="open" profile="virt-aa-helper" name="/etc/libnl/classid" pid=8283 comm="virt-aa-helper" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 type=AVC msg=audit(1506112631.530:1319): apparmor="DENIED" operation="open" profile="virt-aa-helper" name="/etc/libnl/classid" pid=8289 comm="virt-aa-helper" requested_mask="r" denied_mask="r" fsuid=0 ouid=0 type=AVC msg=audit(1506112632.186:1324): apparmor="DENIED" operation="ptrace" profile="/usr/sbin/libvirtd" pid=8342 comm="libvirtd" requested_mask="trace" denied_mask="trace" peer="libvirt-66154842-e926-4f92-92f0-1c1bf61dd1ff" Add ptrace rules to allow the trace operations. Resolves: https://bugzilla.suse.com/show_bug.cgi?id=1058847 Signed-off-by: Jim Fehlig <jfehlig@suse.com> Reviewed-by: Guido Günther <agx@sigxcpu.org>
94 lines
2.4 KiB
Plaintext
94 lines
2.4 KiB
Plaintext
# Last Modified: Mon Apr 5 15:03:58 2010
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#include <tunables/global>
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@{LIBVIRT}="libvirt"
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/usr/sbin/libvirtd flags=(attach_disconnected) {
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#include <abstractions/base>
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#include <abstractions/dbus>
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capability kill,
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capability net_admin,
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capability net_raw,
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capability setgid,
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capability sys_admin,
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capability sys_module,
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capability sys_ptrace,
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capability sys_pacct,
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capability sys_nice,
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capability sys_chroot,
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capability setuid,
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capability dac_override,
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capability dac_read_search,
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capability fowner,
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capability chown,
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capability setpcap,
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capability mknod,
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capability fsetid,
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capability audit_write,
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capability ipc_lock,
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# Needed for vfio
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capability sys_resource,
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network inet stream,
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network inet dgram,
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network inet6 stream,
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network inet6 dgram,
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network packet dgram,
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network packet raw,
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ptrace (trace) peer=unconfined,
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ptrace (trace) peer=/usr/sbin/libvirtd,
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ptrace (trace) peer=libvirt-*,
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# Very lenient profile for libvirtd since we want to first focus on confining
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# the guests. Guests will have a very restricted profile.
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/ r,
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/** rwmkl,
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/bin/* PUx,
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/sbin/* PUx,
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/usr/bin/* PUx,
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/usr/sbin/virtlogd pix,
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/usr/sbin/* PUx,
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/{usr/,}lib/udev/scsi_id PUx,
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/usr/{lib,lib64}/xen-common/bin/xen-toolstack PUx,
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/usr/{lib,lib64}/xen/bin/* Ux,
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/usr/lib/xen-*/bin/libxl-save-helper PUx,
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# force the use of virt-aa-helper
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audit deny /{usr/,}sbin/apparmor_parser rwxl,
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audit deny /etc/apparmor.d/libvirt/** wxl,
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audit deny /sys/kernel/security/apparmor/features rwxl,
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audit deny /sys/kernel/security/apparmor/matching rwxl,
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audit deny /sys/kernel/security/apparmor/.* rwxl,
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/sys/kernel/security/apparmor/profiles r,
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/usr/{lib,lib64}/libvirt/* PUxr,
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/usr/{lib,lib64}/libvirt/libvirt_parthelper ix,
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/usr/{lib,lib64}/libvirt/libvirt_iohelper ix,
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/etc/libvirt/hooks/** rmix,
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/etc/xen/scripts/** rmix,
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# allow changing to our UUID-based named profiles
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change_profile -> @{LIBVIRT}-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*-[0-9a-f]*,
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/usr/{lib,lib64,lib/qemu,libexec}/qemu-bridge-helper Cx -> qemu_bridge_helper,
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# child profile for bridge helper process
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profile qemu_bridge_helper {
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#include <abstractions/base>
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capability setuid,
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capability setgid,
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capability setpcap,
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capability net_admin,
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network inet stream,
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/dev/net/tun rw,
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/etc/qemu/** r,
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owner @{PROC}/*/status r,
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/usr/{lib,lib64,lib/qemu,libexec}/qemu-bridge-helper rmix,
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}
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}
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