Dear friends,<br><br>Recently upgraded to Fedora 15, the skype application gets crashed frequently.....The error details are as mentioned below. Would be great if someone get it fixed.<br><br>Thanks<br><br>=====================================================================<br>
<br>SELinux is preventing /usr/bin/skype from mmap_zero access on the
memprotect Unknown.
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<br>
***** Plugin mmap_zero (53.1 confidence) suggests
**************************
<br>
<br>
If you do not think /usr/bin/skype should need to mmap low memory in
the kernel.
<br>
Then you may be under attack by a hacker, this is a very dangerous
access.
<br>
Do
<br>
contact your security administrator and report this issue.
<br>
<br>
***** Plugin catchall_boolean (42.6 confidence) suggests
*******************
<br>
<br>
If you want to control the ability to mmap a low area of the address
space, as configured by /proc/sys/kernel/mmap_min_addr.
<br>
Then you must tell SELinux about this by enabling the
'mmap_low_allowed' boolean.
<br>
Do
<br>
setsebool -P mmap_low_allowed 1
<br>
<br>
***** Plugin catchall (5.76 confidence) suggests
***************************
<br>
<br>
If you believe that skype should be allowed mmap_zero access on the
Unknown memprotect by default.
<br>
Then you should report this as a bug.
<br>
You can generate a local policy module to allow this access.
<br>
Do
<br>
allow this access for now by executing:
<br>
# grep threaded-ml /var/log/audit/audit.log | audit2allow -M mypol
<br>
# semodule -i mypol.pp
<br>
<br>
Additional Information:
<br>
Source Context unconfined_u:unconfined_r:unconfined_execmem_t:s0-
<br>
s0:c0.c1023
<br>
Target Context unconfined_u:unconfined_r:unconfined_execmem_t:s0-
<br>
s0:c0.c1023
<br>
Target Objects Unknown [ memprotect ]
<br>
Source threaded-ml
<br>
Source Path /usr/bin/skype
<br>
Port <Unknown>
<br>
Host <a href="http://anjaz.intelvision.sc" target="_blank">anjaz.intelvision.sc</a>
<br>
Source RPM Packages skype-2.2.0.35-fc10
<br>
Target RPM Packages <br>
Policy RPM selinux-policy-3.9.16-35.fc15
<br>
Selinux Enabled True
<br>
Policy Type targeted
<br>
Enforcing Mode Enforcing
<br>
Host Name <a href="http://anjaz.intelvision.sc" target="_blank">anjaz.intelvision.sc</a>
<br>
Platform Linux <a href="http://anjaz.intelvision.sc" target="_blank">anjaz.intelvision.sc</a> 2.6.38.8-35.fc15.x86_64
<br>
#1 SMP Wed Jul 6 13:58:54 UTC 2011 x86_64 x86_64
<br>
Alert Count 125
<br>
First Seen Tue 09 Aug 2011 03:49:24 PM SCT
<br>
Last Seen Tue 09 Aug 2011 03:49:27 PM SCT
<br>
Local ID 943f7e9f-e074-437d-9ad1-cf76ac9f7615
<br>
<br>
Raw Audit Messages
<br>
type=AVC msg=audit(1312890567.697:245): avc: denied { mmap_zero }
for pid=4405 comm="skype"
scontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023
tcontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023
tclass=memprotect
<br>
<br>
<br>
type=SYSCALL msg=audit(1312890567.697:245): arch=i386
syscall=lgetxattr per=400000 success=no exit=EACCES a0=0 a1=1000
a2=3 a3=22 items=0 ppid=1769 pid=4405 auid=500 uid=500 gid=500
euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none)
ses=1 comm=skype exe=/usr/bin/skype
subj=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023
key=(null)
<br>
<br>
Hash:
threaded-ml,unconfined_execmem_t,unconfined_execmem_t,memprotect,mmap_zero<br>
<br>
audit2allow
<br>
<br>
#============= unconfined_execmem_t ==============
<br>
#!!!! This avc can be allowed using the boolean 'mmap_low_allowed'
<br>
<br>
allow unconfined_execmem_t self:memprotect mmap_zero;
<br>
<br>
audit2allow -R
<br>
<br>
#============= unconfined_execmem_t ==============
<br>
#!!!! This avc can be allowed using the boolean 'mmap_low_allowed'
<br>
<br>
allow unconfined_execmem_t self:memprotect mmap_zero;
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