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abrt version: 2.0.5 executable: /usr/bin/python hashmarkername: setroubleshoot kernel: 3.0.0-1.fc16.x86_64 reason: SELinux is preventing /usr/sbin/lldpad from using the 'sys_module' capabilities. time: Tue Aug 23 17:55:44 2011 description: :SELinux is preventing /usr/sbin/lldpad from using the 'sys_module' capabilities. : :***** Plugin sys_module (99.5 confidence) suggests ************************* : :If you do not believe that /usr/sbin/lldpad should be attempting to modify the kernel by loading a kernel module. :Then a process might be attempting to hack into your system. :Do :contact your security administrator and report this issue. : :***** Plugin catchall (1.49 confidence) suggests *************************** : :If you believe that lldpad should have the sys_module capability by default. :Then you should report this as a bug. :You can generate a local policy module to allow this access. :Do :allow this access for now by executing: :# grep lldpad /var/log/audit/audit.log | audit2allow -M mypol :# semodule -i mypol.pp : :Additional Information: :Source Context system_u:system_r:lldpad_t:s0 :Target Context system_u:system_r:lldpad_t:s0 :Target Objects Unknown [ capability ] :Source lldpad :Source Path /usr/sbin/lldpad :Port <Unknown> :Host (removed) :Source RPM Packages lldpad-0.9.43-1.fc16 :Target RPM Packages :Policy RPM selinux-policy-3.10.0-15.fc16 :Selinux Enabled True :Policy Type targeted :Enforcing Mode Enforcing :Host Name (removed) :Platform Linux (removed) 3.0.0-1.fc16.x86_64 #1 SMP Fri Jul : 22 16:09:29 UTC 2011 x86_64 x86_64 :Alert Count 3 :First Seen Tue 23 Aug 2011 05:14:06 PM PDT :Last Seen Tue 23 Aug 2011 05:50:04 PM PDT :Local ID 15c58b1b-9547-4cbb-8fd6-c62aa1c1c6b2 : :Raw Audit Messages :type=AVC msg=audit(1314147004.511:135): avc: denied { sys_module } for pid=1016 comm="lldpad" capability=16 scontext=system_u:system_r:lldpad_t:s0 tcontext=system_u:system_r:lldpad_t:s0 tclass=capability : : :type=SYSCALL msg=audit(1314147004.511:135): arch=x86_64 syscall=ioctl success=no exit=ENODEV a0=9 a1=8933 a2=7fffae31eaf0 a3=0 items=0 ppid=1 pid=1016 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm=lldpad exe=/usr/sbin/lldpad subj=system_u:system_r:lldpad_t:s0 key=(null) : :Hash: lldpad,lldpad_t,lldpad_t,capability,sys_module : :audit2allow : :#============= lldpad_t ============== :allow lldpad_t self:capability sys_module; : :audit2allow -R : :#============= lldpad_t ============== :allow lldpad_t self:capability sys_module; :
Can't we not raise this call if we have ENODEV? We are quickly going to be ignoring every network facing domain from executing sys_module. I am thinking of just adding dontaudit domain self:capability sys_module;
[mass update] kernel-3.3.0-4.fc16 has been pushed to the Fedora 16 stable repository. Please retest with this update.
any program that opens a socket with a protocol that isn't loaded yet is going to trigger a modprobe. I'm not sure what you expect the kernel to do here.
The difference is whether or not the kernel_t is getting the modprobe versus the individual type. Theoretically the kernel would only load kernel modules that it owns whereas allow a process to execute sys_module allows it to modify the kernel with its content.
I don't know how the contexts are passed around when networking does its request_module calls. Maybe something can be done there to force it to be kernel_t. Eric ?
This is due to commit 8909c9? If you add a netdev-* alias for the relevant modules, then it should only require CAP_NET_ADMIN here and not CAP_SYS_MODULE.
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Fedora 16 changed to end-of-life (EOL) status on 2013-02-12. Fedora 16 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.