The rules from /etc/security/limits.conf (or /etc/security/limits.d/*.conf) don't get applied after logging in with SELinux enforcing, but they do with permissive. This is not a bug in PAM because if you change this line from /etc/pam.d/system-auth: session required pam_limits.so to: session required pam_limits.so debug in /var/log/auth.log will be log entries that confirm that PAM has tried to set the limits. And it works in permissive mode. So that's a bug in the policy. By default no AVC denials are being written into /var/log/audit/audit.log because of a dontaudit rule. If you clean them out by running `semodule -DB`, the AVCs will be in the log. I fixed this by creating a policy: allow local_login_t unconfined_t:process { noatsecure rlimitinh siginh }; If you try to login into a shell and run `ulimit -a` you'll see your changed values. This applies to all unconfined children of the shell. Reproducible: Always Steps to Reproduce: 1. Add a rule to /etc/security/limits.conf: @users - nofile 1000000 This will set the count of maximum open file descriptors to 1000000 for `users` group. 2. Ensure SELinux is enforcing 3. Reboot 4. Log into your user 5. Run `ulimit -n` 6. See that the value is the default (1024) Actual Results: The rules from /etc/security/limits.conf OR|AND /etc/security/limits.d/*.conf don't get applied. The limits are the default values. Expected Results: The rules from /etc/security/limits.conf OR|AND /etc/security/limits.d/*.conf should be applied. So, if you changed the `nofile` property, `ulimit -n` should print your value and not 1024 (the default one). Portage 3.0.46 (python 3.10.11-final-0, default/linux/amd64/17.0/musl/hardened/selinux, gcc-13, musl-1.2.3-r8, 6.2.12-gentoo-kelvium-musl x86_64) ================================================================= System uname: Linux-6.2.12-gentoo-kelvium-musl-x86_64-Intel-R-_Xeon-R-_CPU_E5-2650_v3_@_2.30GHz-with-libc KiB Mem: 16240752 total, 703324 free KiB Swap: 4194300 total, 4190172 free Timestamp of repository gentoo: Fri, 28 Apr 2023 19:45:01 +0000 Head commit of repository gentoo: 3c33fb6e89517d53a2ca8e1fb380e59d4a9585ac Timestamp of repository guru: Fri, 28 Apr 2023 18:03:53 +0000 Head commit of repository guru: d800ba3887fa124f49febeba37b6d882e65b31b3 Timestamp of repository musl: Tue, 25 Apr 2023 02:04:23 +0000 Head commit of repository musl: c1bfa2317eb7780ca57fbd93acc01df5df737e9f Head commit of repository polymc: f219527ba3c921fc82605105be9d09272c773e2a sh bash 5.2_p15-r2 ld GNU ld (Gentoo 2.40 p4) 2.40.0 ccache version 4.8 [disabled] app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p15-r2::gentoo dev-java/java-config: 2.3.1::gentoo dev-lang/perl: 5.36.0-r2::gentoo dev-lang/python: 3.10.11::gentoo, 3.11.3::gentoo dev-lang/rust: 1.69.0-r1::gentoo dev-util/ccache: 4.8::gentoo dev-util/cmake: 3.26.3::gentoo dev-util/meson: 1.1.0::gentoo sec-policy/selinux-base: 2.20221101-r4::gentoo sys-apps/baselayout: 2.13-r1::gentoo sys-apps/openrc: 0.47.1::gentoo sys-apps/sandbox: 2.30-r1::gentoo sys-devel/autoconf: 2.13-r8::gentoo, 2.71-r6::gentoo sys-devel/automake: 1.16.5-r1::gentoo sys-devel/binutils: 2.40-r4::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/clang: 15.0.7-r1::gentoo, 16.0.2::gentoo sys-devel/gcc: 13.1.0-r1::gentoo sys-devel/gcc-config: 2.10::gentoo sys-devel/libtool: 2.4.7-r1::gentoo sys-devel/llvm: 15.0.7::gentoo, 16.0.2::gentoo sys-devel/make: 4.4.1::gentoo sys-kernel/linux-headers: 6.2::gentoo (virtual/os-headers) sys-libs/libselinux: 3.5::gentoo sys-libs/musl: 1.2.3-r8::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync.ru.gentoo.org/gentoo-portage priority: -1000 volatile: False sync-rsync-verify-max-age: 24 sync-rsync-extra-opts: sync-rsync-verify-metamanifest: yes sync-rsync-verify-jobs: 1 guru location: /var/db/repos/guru sync-type: git sync-uri: https://github.com/gentoo-mirror/guru.git masters: gentoo volatile: False kelvium location: /home/kelvium/src/gentoo-overlay masters: gentoo volatile: True musl location: /var/db/repos/musl sync-type: git sync-uri: https://github.com/gentoo-mirror/musl.git masters: gentoo volatile: False polymc location: /var/db/repos/polymc sync-type: git sync-uri: https://git.swurl.xyz/PolyMC/overlay.git masters: gentoo volatile: True ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="@FREE" CBUILD="x86_64-gentoo-linux-musl" CFLAGS="-march=haswell -O2 -pipe" CHOST="x86_64-gentoo-linux-musl" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=haswell -O2 -pipe" DISTDIR="/var/cache/distfiles" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME" FCFLAGS="-march=haswell -O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync network-sandbox news parallel-fetch preserve-libs protect-owned qa-unresolved-soname-deps sandbox selinux sesandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=haswell -O2 -pipe" GENTOO_MIRRORS="https://mirror.yandex.ru/gentoo-distfiles/" INSTALL_MASK="charset.alias /usr/share/locale/locale.alias" LANG="C.UTF8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LEX="flex" MAKEOPTS="-j18" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" RUSTFLAGS="-C target-cpu=haswell -C opt-level=2" SHELL="/usr/local/bin/dinitsh" USE="acl alsa amd64 audit bzip2 caps cet cli crypt dbus dri egl fortran hardened iconv ipv6 libglvnd libtirpc ncurses nls nptl opengl openmp pam pcre peer_perms pie pipewire readline screencast seatd seccomp selinux split-usr ssl ssp test-rust ubac udev unconfined unicode vulkan wayland xattr xtpax zeroconf zlib" ABI_X86="64" ADA_TARGET="gnat_2021" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt rdrand sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="musl" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-4 php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_10" PYTHON_TARGETS="python3_10" QEMU_SOFTMMU_TARGETS="x86_64" RUBY_TARGETS="ruby30" USERLAND="GNU" VIDEO_CARDS="nouveau" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RANLIB, READELF, SIZE, STRINGS, STRIP, YACC, YFLAGS
Real-world examples that a user would expect to work: PipeWire provides a group (`pipewire`) that changes some limits: @pipewire - rtprio 95 @pipewire - nice -19 @pipewire - memlock 4194304 * - memlock 8192 sys-auth/realtime-base provides a group (`realtime`) that changes some limits: @realtime - rtprio 99 @realtime - memlock unlimited
This is very similar to #662738.
