Add KWin to list of window managers and allow it to mmap wm_tmpfs_t
files to avoid a crash. Related audit event:
type=AVC msg=audit(04/24/2020 15:39:25.287:679) : avc: denied { map } for pid=1309 comm=kwin_x11 path=/memfd:JSVMStack:/lib/x86_64-linux-gnu/libQt5Qml.so.5 (deleted) dev="tmpfs" ino=45261 scontext=user_u:user_r:user_wm_t:s0 tcontext=user_u:object_r:wm_tmpfs_t:s0 tclass=file permissive=0
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
In many cases, this won't result in a change in the actual policy generated, but if the definitions of macros are changed going forward, the mismatches could cause issues.
Signed-off-by: Daniel Burgener <Daniel.Burgener@microsoft.com>
Modern systems shouldn't need direct access to raw memory
devices (/dev/mem, /dev/kmem, /dev/mergemem, dev/oldmem, /dev/port)
anymore, so let's remove the access in most cases and make it tunable
in the rest.
Add dev_read_raw_memory_cond(), dev_write_raw_memory_cond() and
dev_wx_raw_memory_cond(), which are conditional to new boolean
allow_raw_memory_access.
Remove raw memory access for a few domains that should never have
needed it (colord_t, iscsid_t, mdamd_t, txtstat_t), should not need it
anymore (dmidecode_t, Debian devicekit_diskt_t, hald_t, hald_mac_t,
xserver_t) or the domains that should transition to different domain
for this (rpm_t, kudzu_t, dpkg_t).
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
Remove unused permission definitions from SELinux.
Many of these were only ever used in pre-mainline
versions of SELinux, prior to Linux 2.6.0. Some of them
were used in the legacy network or compat_net=1 checks
that were disabled by default in Linux 2.6.18 and
fully removed in Linux 2.6.30.
The corresponding classmap declarations were removed from the
mainline kernel in:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42a9699a9fa179c0054ea3cf5ad3cc67104a6162
Permissions never used in mainline Linux:
file swapon
filesystem transition
tcp_socket { connectto newconn acceptfrom }
node enforce_dest
unix_stream_socket { newconn acceptfrom }
Legacy network checks, removed in 2.6.30:
socket { recv_msg send_msg }
node { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
netif { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
CryFS (https://www.cryfs.org/) is a software that can be run by non-root
users that have access to /dev/fuse. Its command is directly used to
mount a directory ("/usr/bin/cryfs basedir mountpoint"), like command
"mount". Unmounting a mountpoint is done with "fusermount -u
mountpoint", /usr/bin/fusermount being a setuid-root program labeled
mount_exec_t.
EncFS (https://www.arg0.net/encfs) is a similar software that has been
considered insecure since a security audit in 2014 found vulnerabilities
that are not yet fixed (like https://github.com/vgough/encfs/issues/9).
gocryptfs (https://nuetzlich.net/gocryptfs/) is a similar software that
has been inspired by EncFS.
Allow users with role sysadm to use all these projects.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
Arch Linux installs Chromium in /usr/lib/chromium/ like Debian. Instead
of adding a new ifdef(`distro_arch') block, remove the restriction in
chromium.fc.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
WeeChat is an extensible IRC client: https://weechat.org/
* Label WeeChat program and configuration file like other IRC clients
* Allow WeeChat to create a pipe in ~/.weechat/weechat_fifo
* Allow WeeChat to read /proc/sys/crypto/fips_enabled
* Allow WeeChat to use a Unix datagram socket with its forked children
* Allow other accesses
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
