Bug 627724

Summary: SELinux is preventing /sbin/blkid "read" access on dm-4.
Product: [Fedora] Fedora Reporter: Matěj Cepl <mcepl>
Component: selinux-policyAssignee: Daniel Walsh <dwalsh>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: 14CC: dwalsh, mcepl, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:aa1f66a367f42bb7e394bec0688599ba64b47c5592122e9a2a1b450431dc7067
Fixed In Version: selinux-policy-3.9.0-2.fc14 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-09-08 04:31:10 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:

Description Matěj Cepl 2010-08-26 18:57:03 UTC 
Souhrn:

SELinux is preventing /sbin/blkid "read" access on dm-4.

Podrobný popis:

[blkid je v toleratním režimu (fsadm_t). Přístup byl povolen.]

SELinux denied access requested by blkid. It is not expected that this access is
required by blkid and this access may signal an intrusion attempt. It is also
possible that the specific version or configuration of the application is
causing it to require additional access.

Povolení přístupu:

You can generate a local policy module to allow this access - see FAQ
(http://docs.fedoraproject.org/selinux-faq-fc5/#id2961385) Please file a bug
report.

Další informace:

Kontext zdroje                system_u:system_r:fsadm_t:s0-s0:c0.c1023
Kontext cíle                 system_u:object_r:svirt_image_t:s0:c551,c559
Objekty cíle                 dm-4 [ blk_file ]
Zdroj                         blkid
Cesta zdroje                  /sbin/blkid
Port                          <Neznámé>
Počítač                    (removed)
RPM balíčky zdroje          util-linux-ng-2.18-4.fc14
RPM balíčky cíle           
RPM politiky                  selinux-policy-3.8.8-20.fc14
Selinux povolen               True
Typ politiky                  targeted
Vynucovací režim            Enforcing
Název zásuvného modulu     catchall
Název počítače            (removed)
Platforma                     Linux (removed) 2.6.35.2-9.fc14.x86_64
                              #1 SMP Tue Aug 17 22:36:15 UTC 2010 x86_64 x86_64
Počet upozornění           2
Poprvé viděno               Čt 26. srpen 2010, 20:12:15 CEST
Naposledy viděno             Čt 26. srpen 2010, 20:12:15 CEST
Místní ID                   5b6a87eb-34b9-448e-93f5-aa8bd1dbcdea
Čísla řádků              

Původní zprávy auditu      

node=(removed) type=AVC msg=audit(1282846335.231:40): avc:  denied  { read } for  pid=6062 comm="blkid" name="dm-4" dev=devtmpfs ino=12162 scontext=system_u:system_r:fsadm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:svirt_image_t:s0:c551,c559 tclass=blk_file

node=(removed) type=AVC msg=audit(1282846335.231:40): avc:  denied  { open } for  pid=6062 comm="blkid" name="dm-4" dev=devtmpfs ino=12162 scontext=system_u:system_r:fsadm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:svirt_image_t:s0:c551,c559 tclass=blk_file

node=(removed) type=SYSCALL msg=audit(1282846335.231:40): arch=c000003e syscall=2 success=yes exit=3 a0=7fff54b24d99 a1=0 a2=10 a3=0 items=0 ppid=1919 pid=6062 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="blkid" exe="/sbin/blkid" subj=system_u:system_r:fsadm_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  catchall,blkid,fsadm_t,svirt_image_t,blk_file,read
audit2allow suggests:

#============= fsadm_t ==============
allow fsadm_t svirt_image_t:blk_file { read open };
Comment 1 Daniel Walsh 2010-08-26 19:20:07 UTC 
Miroslav add

optional_policy(`
	virt_read_blk_images(fsadm_t)
')

########################################
## <summary>
##	Allow domain to read virt blk image files
## </summary>
## <param name="domain">
##	<summary>
##	Domain allowed access.
##	</summary>
## </param>
#
interface(`virt_read_blk_images',`
	gen_require(`
		attribute virt_image_type;
	')

	read_blk_files_pattern($1, virt_image_type, virt_image_type)
')

To F13

Fixed in selinux-policy-3.9.0-1.fc14
Comment 2 Fedora Update System 2010-08-30 15:58:35 UTC 
selinux-policy-3.9.0-2.fc14 has been submitted as an update for Fedora 14.
https://admin.fedoraproject.org/updates/selinux-policy-3.9.0-2.fc14
Comment 3 Fedora Update System 2010-08-30 19:37:18 UTC 
selinux-policy-3.9.0-2.fc14 has been pushed to the Fedora 14 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update selinux-policy'.  You can provide feedback for this update here: https://admin.fedoraproject.org/updates/selinux-policy-3.9.0-2.fc14
Comment 4 Fedora Update System 2010-09-08 04:29:27 UTC 
selinux-policy-3.9.0-2.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.