Bug 543419

Summary:

SELinux is preventing acroread (unconfined_execmem_t) "mmap_zero" to <Unknown>
(unconfined_execmem_t).

Detailed Description:

SELinux denied access requested by acroread. The current boolean settings do not
allow this access. If you have not setup acroread to require this access this
may signal an intrusion attempt. If you do intend this access you need to change
the booleans on this system to allow the access.

Allowing Access:

Confined processes can be configured to to run requiring different access,
SELinux provides booleans to allow you to turn on/off access as needed. The
boolean allow_unconfined_mmap_low is set incorrectly.
Boolean Description:
Allow unconfined domain to map low memory in the kernel


Fix Command:

# setsebool -P allow_unconfined_mmap_low 1

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_execmem_t:s0
Target Context                unconfined_u:unconfined_r:unconfined_execmem_t:s0
Target Objects                None [ memprotect ]
Source                        wine-preloader
Source Path                   /usr/bin/wine-preloader
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           AdobeReader_enu-8.1.3-1
Target RPM Packages           
Policy RPM                    selinux-policy-3.5.13-55.fc10
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   catchall_boolean
Host Name                     (removed)
Platform                      Linux (removed) 2.6.27.21-170.2.56.fc10.i686
                              #1 SMP Mon Mar 23 23:37:54 EDT 2009 i686 i686
Alert Count                   578
First Seen                    Tue 13 Jan 2009 11:46:48 AM GMT
Last Seen                     Wed 15 Apr 2009 12:39:08 PM BST
Local ID                      5eada6ed-5db1-40ef-8e58-03ece871b771
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1239795548.221:7381): avc:  denied  { mmap_zero } for  pid=3878 comm="acroread" scontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0 tcontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0 tclass=memprotect

node=(removed) type=SYSCALL msg=audit(1239795548.221:7381): arch=40000003 syscall=192 per=400000 success=no exit=-13 a0=0 a1=100000 a2=0 a3=4022 items=0 ppid=1 pid=3878 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="acroread" exe="/opt/Adobe/Reader8/Reader/intellinux/bin/acroread" subj=unconfined_u:unconfined_r:unconfined_execmem_t:s0 key=(null)



Hash String generated from  selinux-policy-3.5.13-55.fc10,catchall_boolean,wine-preloader,unconfined_execmem_t,unconfined_execmem_t,memprotect,mmap_zero
audit2allow suggests:

#============= unconfined_execmem_t ==============
allow unconfined_execmem_t self:memprotect mmap_zero;