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Bug 1380883 - SELinux is preventing master from 'read' accesses on the lnk_file log.
Summary: SELinux is preventing master from 'read' accesses on the lnk_file log.
Keywords:
Status: CLOSED DUPLICATE of bug 1383867
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: 25
Hardware: x86_64
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Lukas Vrabec
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: abrt_hash:54b231afa5d15027339a5eee7a2...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-10-01 02:34 UTC by Adam Williamson
Modified: 2016-11-24 20:45 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-11-24 20:45:32 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Adam Williamson 2016-10-01 02:34:45 UTC 
Description of problem:
Showed up on boot of my main desktop, current F25.
SELinux is preventing master from 'read' accesses on the lnk_file log.

*****  Plugin catchall (100. confidence) suggests   **************************

If you believe that master should be allowed read access on the log lnk_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# ausearch -c 'master' --raw | audit2allow -M my-master
# semodule -X 300 -i my-master.pp

Additional Information:
Source Context                system_u:system_r:postfix_master_t:s0
Target Context                system_u:object_r:tmpfs_t:s0
Target Objects                log [ lnk_file ]
Source                        master
Source Path                   master
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.13.1-216.fc25.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 4.8.0-0.rc8.git0.1.fc25.x86_64 #1
                              SMP Mon Sep 26 17:12:24 UTC 2016 x86_64 x86_64
Alert Count                   495
First Seen                    2016-08-02 15:25:38 PDT
Last Seen                     2016-09-30 19:32:05 PDT
Local ID                      cca5d7c6-ccf3-4024-ae8c-26ff08634e24

Raw Audit Messages
type=AVC msg=audit(1475289125.88:167): avc:  denied  { read } for  pid=1503 comm="master" name="log" dev="tmpfs" ino=22118 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0


Hash: master,postfix_master_t,tmpfs_t,lnk_file,read

Version-Release number of selected component:
selinux-policy-3.13.1-216.fc25.noarch

Additional info:
reporter:       libreport-2.8.0
hashmarkername: setroubleshoot
kernel:         4.8.0-0.rc8.git0.1.fc25.x86_64
type:           libreport
Comment 1 Viorel Tabara 2016-10-06 03:26:27 UTC 
also seeing this after installing and activating postfix:

postfix-3.1.3-1.fc25.x86_64
selinux-policy-3.13.1-216.fc25.noarch
Comment 2 Adam Williamson 2016-11-24 20:45:05 UTC 
Confirmed that my mail server sees a ton of these after upgrade to F25:

[root@mail /]# journalctl -b | grep AVC | head -25
Nov 24 12:35:46 mail.happyassassin.net audit[641]: AVC avc:  denied  { read } for  pid=641 comm="newaliases" name="log" dev="tmpfs" ino=15106 scontext=system_u:system_r:sendmail_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[641]: AVC avc:  denied  { read } for  pid=641 comm="newaliases" name="log" dev="tmpfs" ino=15106 scontext=system_u:system_r:sendmail_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[641]: AVC avc:  denied  { read } for  pid=641 comm="postalias" name="log" dev="tmpfs" ino=15106 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[641]: AVC avc:  denied  { read } for  pid=641 comm="postalias" name="log" dev="tmpfs" ino=15106 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[647]: AVC avc:  denied  { read } for  pid=647 comm="postfix" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[647]: AVC avc:  denied  { read } for  pid=647 comm="postfix" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[647]: AVC avc:  denied  { read } for  pid=647 comm="postfix" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[647]: AVC avc:  denied  { read } for  pid=647 comm="postfix" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[653]: AVC avc:  denied  { read } for  pid=653 comm="master" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[687]: AVC avc:  denied  { read } for  pid=687 comm="postsuper" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[687]: AVC avc:  denied  { read } for  pid=687 comm="postsuper" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[712]: AVC avc:  denied  { read } for  pid=712 comm="postlog" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[712]: AVC avc:  denied  { read } for  pid=712 comm="postlog" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[712]: AVC avc:  denied  { read } for  pid=712 comm="postlog" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[713]: AVC avc:  denied  { read } for  pid=713 comm="master" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[714]: AVC avc:  denied  { read } for  pid=714 comm="master" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[717]: AVC avc:  denied  { read } for  pid=717 comm="qmgr" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_qmgr_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:46 mail.happyassassin.net audit[716]: AVC avc:  denied  { read } for  pid=716 comm="pickup" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_pickup_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:47 mail.happyassassin.net audit[463]: AVC avc:  denied  { write } for  pid=463 comm="spamd" name="/" dev="vda3" ino=2 scontext=system_u:system_r:spamd_t:s0 tcontext=system_u:object_r:root_t:s0 tclass=dir permissive=0
Nov 24 12:35:53 mail.happyassassin.net audit[755]: AVC avc:  denied  { read } for  pid=755 comm="smtpd" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_smtpd_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:53 mail.happyassassin.net audit[756]: AVC avc:  denied  { read } for  pid=756 comm="proxymap" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:53 mail.happyassassin.net audit[757]: AVC avc:  denied  { read } for  pid=757 comm="tlsmgr" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:53 mail.happyassassin.net audit[755]: AVC avc:  denied  { read } for  pid=755 comm="smtpd" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_smtpd_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:53 mail.happyassassin.net audit[758]: AVC avc:  denied  { read } for  pid=758 comm="anvil" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_master_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0
Nov 24 12:35:53 mail.happyassassin.net audit[755]: AVC avc:  denied  { read } for  pid=755 comm="smtpd" name="log" dev="tmpfs" ino=17721 scontext=system_u:system_r:postfix_smtpd_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file permissive=0

and they're ongoing. It may be trying to do something in /run ?
Comment 3 Adam Williamson 2016-11-24 20:45:32 UTC 

*** This bug has been marked as a duplicate of bug 1383867 ***
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