Bug 232229 - [LSPP] Python segfaults with 'getfilecon' in i386
[LSPP] Python segfaults with 'getfilecon' in i386
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: libselinux (Show other bugs)
5.0
i386 Linux
medium Severity high
: ---
: ---
Assigned To: Daniel Walsh
:
Depends On:
Blocks: RHEL5LSPPCertTracker
  Show dependency treegraph
 
Reported: 2007-03-14 10:41 EDT by Klaus Heinrich Kiwi
Modified: 2009-12-18 08:58 EST (History)
4 users (show)

See Also:
Fixed In Version: RHBA-2007-0541
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2007-11-07 11:37:31 EST
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Klaus Heinrich Kiwi 2007-03-14 10:41:28 EDT
Description of problem:
In i386, if I try to 'getfilecon' a file which SELinux prohibits access, python
dies with 'segfault':

[testuser/user_r/SystemLow@rhel5 ~]$ id
uid=501(testuser) gid=501(testuser) groups=501(testuser)
context=testuser_u:user_r:user_t:SystemLow-SystemHigh
[testuser/user_r/SystemLow@rhel5 ~]$ python
Python 2.4.3 (#1, Dec 11 2006, 11:38:52)
[GCC 4.1.1 20061130 (Red Hat 4.1.1-43)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import selinux
>>> selinux.getfilecon('/dev/usb/lp0')
Segmentation fault
[testuser/user_r/SystemLow@rhel5 ~]$ python
Python 2.4.3 (#1, Dec 11 2006, 11:38:52)
[GCC 4.1.1 20061130 (Red Hat 4.1.1-43)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import selinux
>>> selinux.getfilecon('/root/.ssh')
Segmentation fault
[testuser/user_r/SystemLow@rhel5 ~]$ 


== Relevant(?) audit messages: ==
type=SYSCALL msg=audit(1173896641.831:624): arch=40000003 syscall=229 success=no
exit=-13 a0=b7ec78a4 a1=4612b3 a2=9d16498 a3=ff items=1 ppid=14687 pid=14716
auid=501 uid=501 gid=501 euid=501 suid=501 fsuid=501 egid=501 sgid=501 fsgid=501
tty=pts0 comm="python" exe="/usr/bin/python"
subj=testuser_u:user_r:user_t:s0-s15:c0.c1023 key=(null)
type=CWD msg=audit(1173896641.831:624):  cwd="/home/testuser"
type=PATH msg=audit(1173896641.831:624): item=0 name="/dev/usb/lp0" inode=5662
dev=00:10 mode=020660 ouid=0 ogid=7 rdev=b4:00
obj=system_u:object_r:printer_device_t:s0




Version-Release number of selected component (if applicable):
libselinux-python-1.33.4-2.el5

How reproducible:
always

Steps to Reproduce:
See Description
  
Actual results:
Segfault

Expected results:
something like [-1, '']

Additional info:
The strange thing is that I could only reproduce this on i386
x86_64 and ppc64 seems fine:

[testuser/user_r/SystemLow@zaphod ~]$ python
Python 2.4.3 (#1, Dec 11 2006, 11:40:12)
[GCC 4.1.1 20061130 (Red Hat 4.1.1-43)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import selinux
>>> selinux.getfilecon('/root/.ssh')
[-1, '']
>>>   

Although i386 is not in the LSPP evaluation, this bug is causing impact on test
development

I can to debug further if the relevant debuginfo files are made available
Comment 1 Daniel Walsh 2007-03-19 10:33:25 EDT
Fixed in libselinux-1.33.4-4.el5.i386.rpm
Comment 7 errata-xmlrpc 2007-11-07 11:37:31 EST
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2007-0541.html

Note You need to log in before you can comment on or make changes to this bug.