Summary:

SELinux is preventing mzscheme from changing the access protection of memory on
the heap.

Detailed Description:

The mzscheme application attempted to change the access protection of memory on
the heap (e.g., allocated using malloc). This is a potential security problem.
Applications should not be doing this. 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 mzscheme 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
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.

Allowing Access:

If you want mzscheme to continue, you must turn on the allow_execheap boolean.
Note: This boolean will affect all applications on the system.

Fix Command:

setsebool -P allow_execheap=1

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                        lt-mzschemecgc
Source Path                   /home/chappi/Desktop/plt-4.0.2.3/src/mzscheme/.lib
                              s/lt-mzschemecgc
Port                          <Unknown>
Host                          laptop
Source RPM Packages           
Target RPM Packages           
Policy RPM                    selinux-policy-3.3.1-74.fc9
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   allow_execheap
Host Name                     laptop
Platform                      Linux laptop 2.6.25.9-76.fc9.i686 #1 SMP Fri Jun
                              27 16:14:35 EDT 2008 i686 i686
Alert Count                   507
First Seen                    Sun 06 Jul 2008 01:17:18 AM CEST
Last Seen                     Sun 06 Jul 2008 03:49:48 PM CEST
Local ID                      11b907df-6297-40be-80b8-8e98220eaebd
Line Numbers                  

Raw Audit Messages            

host=laptop type=AVC msg=audit(1215352188.20:550): avc:  denied  { execheap } for  pid=23189 comm="mzscheme" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process

host=laptop type=SYSCALL msg=audit(1215352188.20:550): arch=40000003 syscall=125 success=no exit=-13 a0=908c000 a1=2000 a2=7 a3=2000 items=0 ppid=23183 pid=23189 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts1 ses=1 comm="mzscheme" exe="/usr/local/bin/mzscheme" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)