Bug 1224405

Summary: AVCs starting hostapd
Product: [Fedora] Fedora Reporter: Tom Hughes <tom>
Component: selinux-policy-targetedAssignee: Miroslav Grepl <mgrepl>
Status: CLOSED EOL QA Contact: Ben Levenson <benl>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 22CC: dwalsh
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OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2016-07-19 14:12:43 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Log of AVCs none

Description Tom Hughes 2015-05-22 20:32:26 UTC
Created attachment 1028930 [details]
Log of AVCs

Description of problem:

A number of AVCs are being reported for hostapd in F22 which prevent it starting. The log is attached.

Version-Release number of selected component (if applicable):

selinux-policy-targeted-3.13.1-126.fc22.noarch
hostapd-2.3-4.fc22.i686

Comment 1 Tom Hughes 2015-06-29 13:28:10 UTC
I have now found another AVC which was hiding behind a dontaudit rule:

time->Mon Jun 29 10:39:34 2015
type=PROCTITLE msg=audit(1435570774.085:16533): proctitle=2F7573722F7362696E2F686F7374617064002F6574632F686F73746170642F686F73746170642E636F6E66002D50002F72756E2F686F73746170642E706964002D42
type=SYSCALL msg=audit(1435570774.085:16533): arch=40000003 syscall=102 success=yes exit=36 a0=10 a1=bf93c910 a2=b777d000 a3=90517e8 items=0 ppid=1 pid=7241 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="hostapd" exe="/usr/sbin/hostapd" subj=system_u:system_r:hostapd_t:s0 key=(null)
type=AVC msg=audit(1435570774.085:16533): avc:  denied  { search } for  pid=7241 comm="hostapd" name="phy7" dev="debugfs" ino=5626659 scontext=system_u:system_r:hostapd_t:s0 tcontext=system_u:object_r:debugfs_t:s0 tclass=dir permissive=1

This one is particularly nasty because, due to a kernel bug, once triggered there is an invalid pointer in the kernel which may later be dereferenced causing an oops.

Comment 2 Fedora End Of Life 2016-07-19 14:12:43 UTC
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
Fedora please feel free to reopen this bug against that version. If you
are unable to reopen this bug, please file a new report against the
current release. If you experience problems, please add a comment to this
bug.

Thank you for reporting this bug and we are sorry it could not be fixed.