Bug 1378108

Summary: AVC denial: scontext=system_u:system_r:sssd_selinux_manager_t:s0 tcontext=system_u:object_r:default_context_t:s0 tclass=dir { rmdir }
Product: Red Hat Enterprise Linux 7 Reporter: Patrik Kis <pkis>
Component: selinux-policyAssignee: Lukas Vrabec <lvrabec>
Status: CLOSED CURRENTRELEASE QA Contact: Milos Malik <mmalik>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.3CC: lslebodn, lvrabec, mgrepl, mmalik, pkis, plautrba, pvrabec, ssekidde
Target Milestone: rc   
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Hardware: All   
OS: Linux   
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Last Closed: 2017-10-25 14:39:34 UTC Type: Bug
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Description Patrik Kis 2016-09-21 13:46:05 UTC
Description of problem:

New AVC denial appeared:

type=SYSCALL msg=audit(1473934873.287:1068): arch=c0000015 syscall=40 success=no exit=-13 a0=3fffc7d6ad88 a1=0 a2=3fff87d90fd0 a3=0 items=0 ppid=29209 pid=29496 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="selinux_child" exe="/usr/libexec/sssd/selinux_child" subj=system_u:system_r:sssd_selinux_manager_t:s0 key=(null)
type=AVC msg=audit(1473934873.287:1068): avc:  denied  { rmdir } for  pid=29496 comm="selinux_child" name="contexts" dev="dm-0" ino=101862232 scontext=system_u:system_r:sssd_selinux_manager_t:s0 tcontext=system_u:object_r:default_context_t:s0 tclass=dir

Version-Release number of selected component (if applicable):
sssd-1.14.0-41.el7
selinux-policy-3.13.1-99.el7

How reproducible:
Seen once so far, while automated test was executed.
With new execution the AVC denial did not appeared again.

Comment 2 Lukas Slebodnik 2016-09-21 14:39:06 UTC
selinux_child does not call rmdir itself.
it just uses libsemange and libsemanage seems to call rmdir


sh# objdump -T /usr/libexec/sssd/selinux_child | grep rmdir
sh# objdump -p /usr/libexec/sssd/selinux_child | grep semanage
  NEEDED               libsemanage.so.1
  required from libsemanage.so.1:

sh# objdump -T /usr/lib64/libsemanage.so | grep rmdir
0000000000000000      DF *UND*  0000000000000000  GLIBC_2.2.5 rmdir

Comment 3 Petr Lautrbach 2016-09-22 10:40:19 UTC
It seems to be a duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1368097 which is supposed to be fixed in selinux-policy-3.13.1-97.el7