Summary:
SELinux is preventing /usr/bin/aticonfig from making the program stack
executable.
Detailed Description:
The aticonfig application attempted to make its stack executable. This is a
potential security problem. This should never ever be necessary. Stack memory is
not executable on most OSes these days and this will not change. Executable
stack memory is one of the biggest security problems. An execstack error might
in fact be most likely raised by malicious code. Applications are sometimes
coded incorrectly and request this permission. The SELinux Memory Protection
Tests (http://people.redhat.com/drepper/selinux-mem.html) web page explains how
to remove this requirement. If aticonfig does not work and you need it to work,
you can configure SELinux temporarily to allow this access until the application
is fixed. Please file a bug report.
Allowing Access:
Sometimes a library is accidentally marked with the execstack flag, if you find
a library with this flag you can clear it with the execstack -c LIBRARY_PATH.
Then retry your application. If the app continues to not work, you can turn the
flag back on with execstack -s LIBRARY_PATH. Otherwise, if you trust aticonfig
to run correctly, you can change the context of the executable to
execmem_exec_t. "chcon -t execmem_exec_t '/usr/bin/aticonfig'" You must also
change the default file context files on the system in order to preserve them
even on a full relabel. "semanage fcontext -a -t execmem_exec_t
'/usr/bin/aticonfig'"
Fix Command:
chcon -t execmem_exec_t '/usr/bin/aticonfig'
Additional Information:
Source Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
023
Target Context unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
023
Target Objects None [ process ]
Source aticonfig
Source Path /usr/bin/aticonfig
Port <Unknown>
Host (removed)
Source RPM Packages
Target RPM Packages
Policy RPM selinux-policy-3.6.32-41.fc12
Selinux Enabled True
Policy Type targeted
MLS Enabled True
Enforcing Mode Enforcing
Plugin Name allow_execstack
Host Name (removed)
Platform Linux (removed) 2.6.31.5-127.fc12.i686.PAE #1
SMP Sat Nov 7 21:25:57 EST 2009 i686 athlon
Alert Count 1
First Seen Thu 12 Nov 2009 12:56:31 AM EET
Last Seen Thu 12 Nov 2009 12:56:31 AM EET
Local ID d7e44be8-98b4-42fd-b4fd-163ab3264e39
Line Numbers
Raw Audit Messages
node=(removed) type=AVC msg=audit(1257980191.847:23653): avc: denied { execstack } for pid=6113 comm="aticonfig" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process
node=(removed) type=SYSCALL msg=audit(1257980191.847:23653): arch=40000003 syscall=125 success=no exit=-13 a0=bfeb1000 a1=1000 a2=1000007 a3=bfeb15dc items=0 ppid=6095 pid=6113 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts0 ses=1 comm="aticonfig" exe="/usr/bin/aticonfig" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
Hash String generated from selinux-policy-3.6.32-41.fc12,allow_execstack,aticonfig,unconfined_t,unconfined_t,process,execstack
audit2allow suggests:
#============= unconfined_t ==============
allow unconfined_t self:process execstack;