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Bug 2064284

Summary: SELinux is preventing hostapd from 'sendto' accesses on the unix_dgram_socket /tmp/wpa_ctrl_439937-1.
Product: Red Hat Enterprise Linux 8 Reporter: David Jaša <djasa>
Component: selinux-policyAssignee: Zdenek Pytela <zpytela>
Status: CLOSED ERRATA QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact: Marc Muehlfeld <mmuehlfe>
Priority: medium    
Version: 8.5CC: bz.list, dcaratti, dwalsh, extras-qa, goeran, grepl.miroslav, lmiksik, lvrabec, mmalik, mmuehlfe, omosnace, pkoncity, ssekidde, thomas, vmojzis, zpytela
Target Milestone: rcKeywords: Triaged
Target Release: 8.6Flags: pm-rhel: mirror+
Hardware: x86_64   
OS: Linux   
Whiteboard: abrt_hash:cf3791fa6666e8f75bed00cfa1af5172163f1acaf3c9e30ed0a24410fb97308e;
Fixed In Version: selinux-policy-3.14.3-95.el8 Doc Type: No Doc Update
Doc Text:
Story Points: ---
Clone Of: 2032277
: 2064688 2068007 (view as bug list) Environment:
Last Closed: 2022-05-10 15:16:23 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2032277    
Bug Blocks: 2064688, 2068007    

Comment 2 Zdenek Pytela 2022-03-15 18:14:14 UTC 
Commits to backport:

commit 840881f91be518f6cb9ca294ea0122be6aca6af4
Author: Zdenek Pytela <zpytela>
Date:   Wed Jan 26 11:31:58 2022 +0100

    Allow hostapd talk with unconfined user over unix domain dgram socket

commit f0cb46186be7437cd78c96271938b3902cec10b7
Author: Zdenek Pytela <zpytela>
Date:   Wed Jan 26 10:54:36 2022 +0100

    Allow NetworkManager talk with unconfined user over unix domain dgram socket
Comment 3 Milos Malik 2022-03-16 08:28:08 UTC 
Following SELinux denial appeared in enforcing mode:
----
type=PROCTITLE msg=audit(03/16/2022 04:25:11.951:319) : proctitle=/usr/sbin/hostapd /etc/hostapd/hostapd.conf -P /run/hostapd.pid -B 
type=PATH msg=audit(03/16/2022 04:25:11.951:319) : item=0 name=/tmp/wpa_ctrl_14365-1 inode=6849851 dev=fd:01 mode=socket,755 ouid=root ogid=root rdev=00:00 obj=unconfined_u:object_r:user_tmp_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 
type=CWD msg=audit(03/16/2022 04:25:11.951:319) : cwd=/ 
type=SOCKADDR msg=audit(03/16/2022 04:25:11.951:319) : saddr={ saddr_fam=local path=/tmp/wpa_ctrl_14365-1 } 
type=SYSCALL msg=audit(03/16/2022 04:25:11.951:319) : arch=x86_64 syscall=sendto success=no exit=EACCES(Permission denied) a0=0xd a1=0x55b976925e10 a2=0x0 a3=0x0 items=1 ppid=1 pid=13805 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=hostapd exe=/usr/sbin/hostapd subj=system_u:system_r:hostapd_t:s0 key=(null) 
type=AVC msg=audit(03/16/2022 04:25:11.951:319) : avc:  denied  { write } for  pid=13805 comm=hostapd name=wpa_ctrl_14365-1 dev="vda1" ino=6849851 scontext=system_u:system_r:hostapd_t:s0 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=sock_file permissive=0 
----

# rpm -qa selinux\* hostapd\* | sort
hostapd-2.10-1.el8.x86_64
selinux-policy-3.14.3-94.el8.noarch
selinux-policy-devel-3.14.3-94.el8.noarch
selinux-policy-targeted-3.14.3-94.el8.noarch
#
Comment 4 Milos Malik 2022-03-16 08:39:53 UTC 
Following SELinux denials appeared in permissive mode:
----
type=PROCTITLE msg=audit(03/16/2022 04:31:03.406:331) : proctitle=/usr/sbin/hostapd /etc/hostapd/hostapd.conf -P /run/hostapd.pid -B 
type=PATH msg=audit(03/16/2022 04:31:03.406:331) : item=0 name=/tmp/wpa_ctrl_23340-1 inode=7140085 dev=fd:01 mode=socket,755 ouid=root ogid=root rdev=00:00 obj=unconfined_u:object_r:user_tmp_t:s0 nametype=NORMAL cap_fp=none cap_fi=none cap_fe=0 cap_fver=0 cap_frootid=0 
type=CWD msg=audit(03/16/2022 04:31:03.406:331) : cwd=/ 
type=SOCKADDR msg=audit(03/16/2022 04:31:03.406:331) : saddr={ saddr_fam=local path=/tmp/wpa_ctrl_23340-1 } 
type=SYSCALL msg=audit(03/16/2022 04:31:03.406:331) : arch=x86_64 syscall=sendto success=yes exit=0 a0=0xd a1=0x55e90727bd10 a2=0x0 a3=0x0 items=1 ppid=1 pid=22786 auid=unset uid=root gid=root euid=root suid=root fsuid=root egid=root sgid=root fsgid=root tty=(none) ses=unset comm=hostapd exe=/usr/sbin/hostapd subj=system_u:system_r:hostapd_t:s0 key=(null) 
type=AVC msg=audit(03/16/2022 04:31:03.406:331) : avc:  denied  { sendto } for  pid=22786 comm=hostapd path=/tmp/wpa_ctrl_23340-1 scontext=system_u:system_r:hostapd_t:s0 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=unix_dgram_socket permissive=1 
type=AVC msg=audit(03/16/2022 04:31:03.406:331) : avc:  denied  { write } for  pid=22786 comm=hostapd name=wpa_ctrl_23340-1 dev="vda1" ino=7140085 scontext=system_u:system_r:hostapd_t:s0 tcontext=unconfined_u:object_r:user_tmp_t:s0 tclass=sock_file permissive=1 
----
Comment 30 errata-xmlrpc 2022-05-10 15:16:23 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (selinux-policy bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:1995