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Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
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https://access.redhat.com/errata/RHBA-2022:7691
Description of problem: There is a AVC message during ntlm auth with Freeradius and samba/winbind. Version-Release number of selected component (if applicable): freeradius-3.0.20-12.module+el8.6.0+13617+542eca26.x86_64 samba-4.15.5-5.el8.x86_64 samba-winbind-4.15.5-5.el8.x86_64 selinux-policy-3.14.3-95.el8.noarch selinux-policy-targeted-3.14.3-95.el8.noarch How reproducible: Steps to Reproduce: dnf install -y freeradius freeradius-utils samba samba-common samba-winbind samba-winbind-clients samba-client wpa_supplicant 1. Freeradius: sed -i 's/default_eap_type = md5/default_eap_type = peap/' /etc/raddb/mods-enabled/eap sed -i '/peap {/,/}/ s/^.*copy_request_to_tunnel.*/copy_request_to_tunnel = yes/' /etc/raddb/mods-enabled/eap sed -i '/peap {/,/}/ s/^.*use_tunneled_reply.*/use_tunneled_reply = yes/' /etc/raddb/mods-enabled/eap sed -i 's|^mschap {|mschap {\n\tntlm_auth = \"/usr/bin/ntlm_auth --request-nt-key --allow-mschapv2 --username=%{%{Stripped-User-Name}:-%{%{User-Name}:-None}} --challenge=%{%{mschap:Challenge}:-00} --nt-response=%{%{msch ap:NT-Response}:-00} --domain=QAkR184\"\n|' /etc/raddb/mods-enabled/mschap gpasswd -a radiusd wbpriv 2. Samba: #/etc/samba/smb.conf [global] domain logons = Yes load printers = No netbios name = QAKR184 ntlm auth = ntlmv1-permitted printcap name = cups security = USER idmap config * : backend = tdb admin users = root nbusr cups options = raw echo "WINBINDOPTIONS=\"-s /etc/samba/winbindd.conf\"" >> /etc/sysconfig/samba #useradd -m nbusr #echo -en "nbusr123\nnbusr123\n" | /usr/bin/smbpasswd -L -s -a nbusr #useradd -g nobody -s /bin/false -d / 'QAkR184$' #smbpasswd -a -n -m QAkR184 3. winbind: #cat /etc/samba/winbindd.conf include = /etc/samba/smb.conf [global] security = domain domain logons = yes netbios name = QAkR184 4. run eapol tests eapol_test -c ./mschap.conf -s testing123 #cat ./mschap.conf network={ ssid="QA test 802.1x network" key_mgmt=WPA-EAP eap=PEAP phase2="autheap=MSCHAPv2" identity="nbusr" password="nbusr123" ca_cert="/etc/raddb/certs/ca.pem" } Actual results: eapol tests passed but there is an AVC message Enforcing: time->Fri Apr 8 05:23:01 2022 type=PROCTITLE msg=audit(1649409781.059:975): proctitle=2F7573722F62696E2F6E746C6D5F61757468002D2D726571756573742D6E742D6B6579002D2D757365726E616D653D6E62757372002D2D6368616C6C656E67653D36383639666333323737336334643134002D2D6E742D726573706F6E73653D3362356539663536616464626539646365626439316430646131363732323637 type=PATH msg=audit(1649409781.059:975): item=0 name="/proc/net/unix" inode=4026532055 dev=00:05 mode=0100444 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:proc_net_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(1649409781.059:975): cwd="/" type=SYSCALL msg=audit(1649409781.059:975): arch=c000003e syscall=21 success=no exit=-13 a0=7fff53b4d7e0 a1=4 a2=8 a3=1d items=1 ppid=25175 pid=25208 auid=4294967295 uid=95 gid=95 euid=95 suid=95 fsuid=95 egid=95 sgid=95 fsgid=95 tty=(none) ses=4294967295 comm="ntlm_auth" exe="/usr/bin/ntlm_auth" subj=system_u:system_r:winbind_helper_t:s0 key=(null) type=AVC msg=audit(1649409781.059:975): avc: denied { read } for pid=25208 comm="ntlm_auth" name="unix" dev="proc" ino=4026532055 scontext=system_u:system_r:winbind_helper_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file permissive=0 Permissive: time->Fri Apr 8 05:23:38 2022 type=PROCTITLE msg=audit(1649409818.237:978): proctitle=2F7573722F62696E2F6E746C6D5F61757468002D2D726571756573742D6E742D6B6579002D2D757365726E616D653D6E62757372002D2D6368616C6C656E67653D66653835666134623234386534353336002D2D6E742D726573706F6E73653D3862613865663431343230383739306164613135653032663235613738383334 type=PATH msg=audit(1649409818.237:978): item=0 name="/proc/net/unix" inode=4026532055 dev=00:05 mode=0100444 ouid=0 ogid=0 rdev=00:00 obj=system_u:object_r:proc_net_t:s0 nametype=NORMAL cap_fp=0 cap_fi=0 cap_fe=0 cap_fver=0 cap_frootid=0 type=CWD msg=audit(1649409818.237:978): cwd="/" type=SYSCALL msg=audit(1649409818.237:978): arch=c000003e syscall=21 success=yes exit=0 a0=7ffcc1fc7aa0 a1=4 a2=8 a3=1d items=1 ppid=25175 pid=25214 auid=4294967295 uid=95 gid=95 euid=95 suid=95 fsuid=95 egid=95 sgid=95 fsgid=95 tty=(none) ses=4294967295 comm="ntlm_auth" exe="/usr/bin/ntlm_auth" subj=system_u:system_r:winbind_helper_t:s0 key=(null) type=AVC msg=audit(1649409818.237:978): avc: denied { read } for pid=25214 comm="ntlm_auth" name="unix" dev="proc" ino=4026532055 scontext=system_u:system_r:winbind_helper_t:s0 tcontext=system_u:object_r:proc_net_t:s0 tclass=file permissive=1 Expected results: No AVC message Additional info: It is possible to use this test: CoreOS/freeradius/Sanity/samba-windows-domain-integration/