/dev/cpu/0/microcode....link mislabeled?

Russell Coker russell at coker.com.au
Sun Aug 22 09:07:46 UTC 2004


On Sun, 22 Aug 2004 10:29, Tom London <selinux at comcast.net> wrote:
> Aug 21 13:31:15 fedora kernel: audit(1093120250.606:0): avc:  denied  {
> read } for  pid=1558 exe=/sbin/microcode_ctl name=microcode dev=hda2
> ino=2689367 scontext=system_u:system_r:cpucontrol_t
> tcontext=system_u:object_r:device_t tclass=lnk_file
> Aug 21 13:31:15 fedora kernel: microcode: No new microdata for cpu 0
>
> 'ls -lZ /dev/cpu/0/microcode' yields:
> lrwxrwxrwx  root     root     system_u:object_r:device_t
> /dev/cpu/0/microcode -> ../../microcode
>
> Does this link need to be labeled cpu_device_t, or
> does 'allow cpucontrol_t device_t:lnk_file { read };' need
> to be added to cpucontrol.te, or .... ?

Symbolic links under /dev should have type device_t.  So an allow line such as 
the one you suggest should be added to the policy.

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