| Summary: | MLS: udevadm works but AVCs appear | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Milos Malik <mmalik> |
| Component: | selinux-policy | Assignee: | Daniel Walsh <dwalsh> |
| Status: | CLOSED ERRATA | QA Contact: | Milos Malik <mmalik> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 6.1 | CC: | dwalsh, mgrepl, syeghiay |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | selinux-policy-3.7.19-76.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-05-19 12:12:33 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
> type=AVC msg=audit(1298990740.726:6843): avc: denied { write } for pid=2271
> comm="console_init" name="i18n" dev=dm-0 ino=407408
> scontext=system_u:system_r:udev_t:s0-s15:c0.c1023
> tcontext=system_u:object_r:etc_t:s0 tclass=file
We have in F14/F15
# console_init manages files in /etc/sysconfig
files_manage_etc_files(udev_t)
Other issues are caused by udevadm (which is now labeled as udev_exec_t) running as sysadm_t. I am thinking about adding udev_run(sysadm_r, sysadm_t) I am trying to test it and it looks good. Milos, could you also test it? I mean using a local policy which contains domtrans_pattern(sysadm_t, udev_exe_t, udev_t) role sysadm_r types udev_t; No AVCs appear when following local policy is loaded:
policy_module(testpolicy,1.0)
require {
type sysadm_t;
type udev_t;
type udev_exec_t;
}
files_manage_etc_files(udev_t)
domtrans_pattern(sysadm_t, udev_exec_t, udev_t)
role sysadm_r types udev_t;
Great. Fixed in selinux-policy-3.7.19-76.el6 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 therefore 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-2011-0526.html |
Description of problem: Version-Release number of selected component (if applicable): libgudev1-147-2.34.el6.x86_64 libudev-147-2.34.el6.x86_64 python-gudev-147.1-4.el6_0.1.x86_64 selinux-policy-3.7.19-73.el6.noarch selinux-policy-mls-3.7.19-73.el6.noarch selinux-policy-targeted-3.7.19-73.el6.noarch udev-147-2.34.el6.x86_64 How reproducible: always Steps to Reproduce: * get a RHEL-6 machine with active MLS policy * log in as root via console # id -Z root:sysadm_r:sysadm_t:s0-s15:c0.c1023 # udevadm trigger # udevadm info --export-db >& /dev/null # udevadm settle # udevadm control --reload-rules # udevadm control --stop-exec-queue # udevadm control --start-exec-queue Actual results: ---- time->Tue Mar 1 09:45:40 2011 type=SYSCALL msg=audit(1298990740.726:6843): arch=c000003e syscall=2 success=yes exit=4 a0=401fcb a1=2 a2=0 a3=40 items=0 ppid=2177 pid=2271 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="console_init" exe="/lib/udev/console_init" subj=system_u:system_r:udev_t:s0-s15:c0.c1023 key=(null) type=AVC msg=audit(1298990740.726:6843): avc: denied { write } for pid=2271 comm="console_init" name="i18n" dev=dm-0 ino=407408 scontext=system_u:system_r:udev_t:s0-s15:c0.c1023 tcontext=system_u:object_r:etc_t:s0 tclass=file ---- time->Tue Mar 1 09:46:51 2011 type=SYSCALL msg=audit(1298990811.972:6845): arch=c000003e syscall=62 success=yes exit=0 a0=9df a1=a a2=7f8ae3d92238 a3=0 items=0 ppid=1 pid=498 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="udevd" exe="/sbin/udevd" subj=system_u:system_r:udev_t:s0-s15:c0.c1023 key=(null) type=AVC msg=audit(1298990811.972:6845): avc: denied { signal } for pid=498 comm="udevd" scontext=system_u:system_r:udev_t:s0-s15:c0.c1023 tcontext=root:sysadm_r:sysadm_t:s0-s15:c0.c1023 tclass=process ---- time->Tue Mar 1 09:46:51 2011 type=SYSCALL msg=audit(1298990811.970:6844): arch=c000003e syscall=44 success=yes exit=280 a0=3 a1=7fffffec88f0 a2=118 a3=0 items=0 ppid=2127 pid=2527 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=ttyS1 ses=2 comm="udevadm" exe="/sbin/udevadm" subj=root:sysadm_r:sysadm_t:s0-s15:c0.c1023 key=(null) type=AVC msg=audit(1298990811.970:6844): avc: denied { sendto } for pid=2527 comm="udevadm" path=002F6F72672F6B65726E656C2F756465762F7564657664 scontext=root:sysadm_r:sysadm_t:s0-s15:c0.c1023 tcontext=system_u:system_r:udev_t:s0-s15:c0.c1023 tclass=unix_dgram_socket ---- Expected results: no AVCs