600391 – [RHEL6] Selinux AVC Denied messages

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Bug 600391 - [RHEL6] Selinux AVC Denied messages

Summary: [RHEL6] Selinux AVC Denied messages

Keywords:
Status:	CLOSED NOTABUG
Alias:	None
Product:	Red Hat Enterprise Linux 6
Classification:	Red Hat
Component:	selinux-policy
Sub Component:
Version:	6.0
Hardware:	All
OS:	Linux
Priority:	high
Severity:	medium
Target Milestone:	rc
Target Release:	---
Assignee:	Miroslav Grepl
QA Contact:	Milos Malik
Docs Contact:
URL:	http://rhts.redhat.com/cgi-bin/rhts/t...
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2010-06-04 15:44 UTC by Jeff Burke
Modified:	2012-10-15 15:18 UTC (History)
CC List:	7 users (show)
Fixed In Version:	selinux-policy-3.7.19-24.el6
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2010-07-13 20:56:35 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Description Jeff Burke 2010-06-04 15:44:53 UTC

Description of problem:
 While running kernel testing we received AVC Denied messages from a background task.

Version-Release number of selected component (if applicable):
selinux-policy-3.7.19-21.el6 

How reproducible:
Frequently

Actual results:
Following messages were found in dmesg:
type=1400 audit(1275600473.315:167630): avc:  denied  { signal } for  pid=16651 comm="telinit" scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=process
type=1400 audit(1275600473.315:167631): avc:  denied  { signal } for  pid=16651 comm="telinit" scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=process

Expected results:
Should not receive AVC messages under normal operation

Additional info:

Comment 2 Daniel Walsh 2010-06-04 21:14:28 UTC

Miroslav, please add this access and update policy to match F13.

Comment 3 RHEL Program Management 2010-06-07 17:03:55 UTC

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

Comment 4 Miroslav Grepl 2010-06-10 06:37:00 UTC

Fixed in selinux-policy-3.7.19-24.el6.noarch

Comment 8 releng-rhel@redhat.com 2010-07-02 19:51:38 UTC

Red Hat Enterprise Linux Beta 2 is now available and should resolve
the problem described in this bug report. This report is therefore being closed
with a resolution of CURRENTRELEASE. You may reopen this bug report if the
solution does not work for you.

Comment 9 Jeff Burke 2010-07-12 14:45:21 UTC

selinux-policy-targeted-3.7.19-24.el6.noarch issue was still seen:


/bin/grep avc: /tmp/dmesg.log | /bin/grep --invert-match granted
Following messages were found in dmesg:

type=1400 audit(1278942725.447:288344): avc:  denied  { sys_admin } for  pid=18066 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.472:288345): avc:  denied  { sys_resource } for  pid=18066 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.509:288346): avc:  denied  { sys_admin } for  pid=18066 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.534:288347): avc:  denied  { sys_resource } for  pid=18066 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.577:288348): avc:  denied  { sys_admin } for  pid=18066 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.603:288349): avc:  denied  { sys_resource } for  pid=18066 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.638:288350): avc:  denied  { sys_admin } for  pid=18066 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.663:288351): avc:  denied  { sys_resource } for  pid=18066 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.704:288352): avc:  denied  { sys_admin } for  pid=18066 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942725.729:288353): avc:  denied  { sys_resource } for  pid=18066 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.482:288354): avc:  denied  { sys_admin } for  pid=18066 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.508:288355): avc:  denied  { sys_resource } for  pid=18066 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.537:288356): avc:  denied  { sys_admin } for  pid=21017 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.562:288357): avc:  denied  { sys_resource } for  pid=21017 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.591:288358): avc:  denied  { sys_admin } for  pid=21018 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.617:288359): avc:  denied  { sys_resource } for  pid=21018 comm="prelink" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.644:288360): avc:  denied  { sys_admin } for  pid=21018 comm="prelink" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.657:288361): avc:  denied  { sys_admin } for  pid=21019 comm="ldd" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.657:288362): avc:  denied  { sys_resource } for  pid=21019 comm="ldd" capability=24  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability
type=1400 audit(1278942801.661:288363): avc:  denied  { sys_admin } for  pid=21019 comm="ldd" capability=21  scontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tcontext=system_u:system_r:prelink_cron_system_t:s0-s0:c0.c1023 tclass=capability

Comment 11 Daniel Walsh 2010-07-12 15:43:11 UTC

sys_resource/sys_admin usually means you are running out of space.

Comment 12 Jeff Burke 2010-07-12 16:04:58 UTC

At the time the test was running we had the following:

/dev/mapper/vg_intels3e3601-lv_root
                       50G  3.1G   44G   7% /
tmpfs                  32G     0   32G   0% /dev/shm
/dev/sda1             485M   65M  395M  15% /boot
/dev/mapper/vg_intels3e3601-lv_home
                      155G  188M  147G   1% /home

Comment 13 Daniel Walsh 2010-07-12 21:20:00 UTC

Well something filled the disk, or something strange happened.

Comment 14 Eric Paris 2010-07-13 01:52:38 UTC

        if (atomic_read(&p->real_cred->user->processes) >=
                        p->signal->rlim[RLIMIT_NPROC].rlim_cur) {
                if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RESOURCE) &&
                    p->real_cred->user != INIT_USER)
                        goto bad_fork_free;
        }


I'm betting you exceeded the maximum number of processes according to your system limits.

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